dy
dy — 縮寫
1. a written short form of the word 'delivery', used on packages, shipping document
遞送
遞送的縮寫
a written short form of the word 'delivery', used on packages, shipping documents, and order records to show that goods have been brought to a person or place.
The courier wrote 'dy' next to Ari's apartment number after handing over the parcel.
快遞員在 Ari 的公寓號碼旁寫上 "dy"，表示包裹已送達。
written abbreviation on shipping documents
Faisal checked the 'dy' column on the invoice before signing for the office supplies.
Faisal 在發票上核對 "dy" 欄位後，才簽收辦公用品。
Each box in the warehouse has a red 'dy' stamp showing the date it arrived.
倉庫裡的每個紙箱都有紅色的 "dy" 印章，顯示送達日期。
The tracking page showed 'dy' once the driver confirmed the handoff at the desk.
追蹤頁面顯示 "dy" 狀態，表示司機已在櫃台完成交付。
- delivered
the full adjective form used in order statuses
用法筆記
Appears on forms, labels, and digital tracking interfaces rather than in full sentences.
常見錯誤
2. a written short form of the word 'deputy', placed before an official job title t
副手
副職的縮寫
a written short form of the word 'deputy', placed before an official job title to show that the person is the second-ranking officer below the main office holder.
Astrid was promoted to Dy Director of Operations after five years with the company.
Astrid 在該公司工作五年後，晉升為營運部副總監（Dy Director）。
Dy + job title for second-ranking officer
A letter signed by Dy Chairperson Eve arrived just before the annual board meeting.
由副董事長 Eve 簽署的信函，在年度董事會召開前送達。
Staff members should direct budget questions to the Dy Manager of the finance team.
員工應將預算問題直接向財務團隊的副經理（Dy Manager）提出。
The Dy Principal called a meeting to discuss changes to the school timetable.
副校長召開會議，討論學校課程表的變更。
用法筆記
Always followed by a capitalised job title (e.g. Dy Director, Dy Chair). More common in British English than American English organisational writing.
常見錯誤
3. a written short form of the word 'duty', used on customs forms and trade documen
關稅
關稅的縮寫
a written short form of the word 'duty', used on customs forms and trade documents to refer to a government tax charged on goods brought into or taken out of a country.
The customs form showed 'dy paid' next to the shipment of ceramics from Japan.
海關申報單在從日本進口的陶瓷貨物旁標示 "dy paid"（關稅已繳）。
'dy paid' on customs forms
Ayana reviewed the invoice and found the dy charges higher than expected.
Ayana 核對發票時發現，關稅費用比預期高。
Marta asked a customs agent whether the dy rate applied to her tiles from Portugal.
Marta 向一名海關專員詢問，她從葡萄牙進口的磁磚是否適用此關稅稅率。
The port authority updated dy rates for textiles at the start of the quarter.
港務局在本季初更新了紡織品的關稅稅率。
用法筆記
Almost always appears on printed forms and invoices rather than in spoken language. The full word 'duty' is preferred in speech.
常見錯誤
4. a written short form of the word 'dysprosium', a rare-earth element used in magn
鏑
鏑（稀土金屬）的縮寫
a written short form of the word 'dysprosium', a rare-earth element used in magnets and laser materials.
The laboratory report listed 'dy' among the trace elements found in the rock sample.
實驗室報告在岩石樣本的微量元素中，列出了 "dy"（鏑）。
abbreviation in lab reports
Mira noted the dy concentration in the alloy was too low for commercial use.
Mira 指出，合金中的鏑濃度太低，無法商業使用。
Kim checked the dy content on the certificate before approving the rare-earth ore shipment.
Kim 在批准稀土礦石出貨前，核對了分析證明書上的鏑含量。
The shipment contained dy at ninety-nine percent purity, verified by an independent lab.
該批貨物含純度百分之九十九的鏑，經獨立實驗室驗證。
用法筆記
Used in technical writing and laboratory records. The standard periodic symbol Dy (capitalised) is more common in scientific formulas.
常見錯誤
dy — 符號
1. the two-letter chemical symbol for dysprosium, appearing in the periodic table a
鏑（符號）
鏑的化學元素符號
the two-letter chemical symbol for dysprosium, appearing in the periodic table and in chemical formulas to represent this rare-earth lanthanide element.
In the periodic table, Dy sits between Tb, element 65, and Ho, element 67.
在元素週期表中，Dy 位於 65 號元素 Tb 與 67 號元素 Ho 之間。
periodic table position for Dy
Heloísa wrote Dy in the formula to show the compound contained dysprosium.
Heloísa 在化學式中寫上 Dy，表示化合物中含有鏑。
Dy is a key ingredient in magnets for wind turbine rotors.
Dy 是風力發電機轉子磁鐵中的關鍵成分。
Dr. Okonkwo asked her students to find Dy among the lanthanide elements on the table.
Okonkwo 博士要求學生在元素表上找出鑭系元素中的 Dy。
用法筆記
Always capitalised as Dy in scientific writing. Distinguish from the lowercase abbreviation 'dy', which is used in non-scientific notes and records.
常見錯誤
dy — 構詞成分
1. a Greek-derived prefix meaning 'two' or 'double', found in technical words such
二，雙
希臘來源的接頭詞，意為「二」
a Greek-derived prefix meaning 'two' or 'double', found in technical words such as 'dyad' (a pair) and 'dyarchy' (rule by two).
In sociology class, Hoa studied the dyad as the smallest unit of social interaction.
在社會學課堂上，Hoa 將「二人組」視為社會互動的最小單位來研究。
dyad = a pair of two in social theory
Ancient Sparta was often described as a dyarchy with two kings ruling jointly.
古斯巴達常被描述為一種「雙王制」，由兩位國王共同統治。
dyarchy = government by two rulers
Professor Sato drew the Greek root 'dy-' on the board, showing how it forms 'dyad'.
佐藤教授在黑板上寫下希臘字根 "dy-"，示範它如何構成 "dyad" 這個詞。
Dr. Amira used dyadic analysis to study how pairs of musicians coordinate during a performance.
Amira 博士運用雙方互動分析，研究雙人樂手在演奏時的配合方式。
- mono-
prefix meaning 'one', from Greek
文法句型
dy- + noun
用法筆記
This combining form only appears within Greek-derived compounds and is not used as a standalone word. Unlike the English word 'two', dy- cannot be used independently — it always attaches to a root (e.g. dyad, not dy by itself).