non-cyclic
non-cyclic — 形容詞
1. describing something that does not happen again and again in a fixed pattern, bu
非週期的
不規律重複、僅發生一次的
describing something that does not happen again and again in a fixed pattern, but only once or in no set order
Sivan's research focused on non-cyclic weather events that struck the island only once each century.
Sivan 的研究聚焦於每百年只襲擊該島一次的非週期性天氣事件。
non-cyclic + event noun for one-off occurrences
The accountant explained that the bonus was a non-cyclic payment, not part of the regular monthly salary.
會計師解釋說，這筆獎金是非週期性的給付，並不屬於每月固定薪資的一部分。
non-cyclic + payment/cost in finance contexts
Hugo argued that the company's losses were non-cyclic and would not return next quarter.
Hugo 主張公司的虧損是非週期性的，下一季不會再出現。
The historian described the famine as a non-cyclic disaster rather than part of a wider pattern.
這位歷史學家把那場饑荒形容為非週期性的災難，而不是更大週期的一環。
Nila's team studies non-cyclic changes in the local bird population caused by sudden human activity.
Nila 的團隊研究當地鳥類族群因人類突發活動造成的非週期性變化。
- one-off
informal; emphasises a single occurrence
- irregular
broader; covers any non-fixed pattern
- non-recurring
common in finance and accounting reports
文法句型
non-cyclic + noun
用法筆記
Typically appears before nouns describing events, payments, costs, or changes; rarely used predicatively outside business and scientific writing. Distinguish from sense 2, which is a chemistry term.
常見錯誤
2. in chemistry, describing a molecule whose atoms form an open chain rather than j
非環狀的
化學中分子原子未形成閉環的
in chemistry, describing a molecule whose atoms form an open chain rather than joining up into a closed ring
Cyrus drew a diagram showing how the non-cyclic structure of the molecule allowed extra bonds at each end.
Cyrus 畫了一張圖，說明該分子的非環狀結構如何在兩端容許額外的鍵結。
non-cyclic + structure/molecule in chemistry
The chemistry teacher asked Eri to label the non-cyclic compound on the whiteboard.
化學老師請 Eri 在白板上標出那個非環狀的化合物。
non-cyclic + compound for open-chain substances
Minh's research paper compared the boiling points of non-cyclic and ring-shaped hydrocarbons.
Minh 的研究論文比較了非環狀與環狀碳氫化合物的沸點。
Élise explained that the non-cyclic version of the molecule reacts more easily with oxygen.
Élise 解釋說，這個分子的非環狀版本更容易與氧氣反應。
- acyclic
more technical, preferred in academic chemistry
- open-chain
descriptive; common in textbooks
- cyclic
having atoms arranged in a ring
- ring-shaped
plain-English equivalent
文法句型
non-cyclic + chemistry noun
用法筆記
Restricted to chemistry and biochemistry writing. Distinguish from sense 1, which is the general 'not repeating' meaning; this sense always refers to the shape of a molecule's atomic structure.