costa
costa — 形容詞
- costapositive
- more costacomparative
- most costasuperlative
1. The two-word capitalized phrase 'Costa Rican' used before a noun to say that som
哥斯大黎加的
哥斯大黎加相關的（雙詞片語）
The two-word capitalized phrase 'Costa Rican' used before a noun to say that something or someone is from the Central American country of Costa Rica. This entry describes the phrase — the standalone word 'costa' cannot function as an adjective.
Ryo and his family spent two weeks at a beautiful Costa Rican beach last summer.
Ryo 和家人去年夏天在一個美麗的哥斯大黎加海灘度過了兩星期。
Costa Rican + noun (attributive phrase)
The Costa Rican government built hydroelectric dams in Guanacaste to power homes and factories.
哥斯大黎加政府在瓜納卡斯特興建水力發電水壩，為住家和工廠供電。
Mira ordered a bag of Costa Rican coffee beans from the local shop.
Mira 從當地商店訂購了一袋哥斯大黎加咖啡豆。
Lakan wrote a report on Costa Rican wildlife for his geography class.
Lakan 為他的地理課寫了一份關於哥斯大黎加野生動物的報告。
文法句型
Costa Rican + noun
用法筆記
This entry documents the attributive use of the two-word phrase 'Costa Rican'. The standalone noun 'costa' (meaning 'rib') is a completely different word — it is not an adjective and cannot replace 'Costa Rican'. Always capitalize both words when writing the phrase.
常見錯誤
costa — 名詞
- costasingular
- costasplural
1. The two-word capitalized phrase 'Costa Rican' when used as a countable noun to r
哥斯大黎加人
來自哥斯大黎加的人（雙詞片語）
The two-word capitalized phrase 'Costa Rican' when used as a countable noun to refer to someone who was born in or is a citizen of the Central American country Costa Rica. This is a compound phrase — the standalone word 'costa' does not carry this demonym meaning.
Tamar is a Costa Rican who moved to Canada to study at university.
Tamar 是一位哥斯大黎加人，她搬到加拿大上大學。
a + Costa Rican (countable singular noun phrase)
At Boruca's Fiesta de los Diablitos, Sumin watched Costa Ricans dance in carved wooden masks.
在博魯卡的魔鬼節上，Sumin 觀看哥斯大黎加人戴著雕刻木面具跳舞。
plural: Costa Ricans
Ignacio works with several Costa Ricans at the international bank downtown.
Ignacio 在市中心國際銀行與幾位哥斯大黎加人一起工作。
Many Costa Ricans are proud their country abolished its army in 1948 to fund public schools.
許多哥斯大黎加人為國家在1948年廢除軍隊、資助公立學校而感到自豪。
Putri's neighbour is a Costa Rican who grew up near the Arenal Volcano.
Putri 的鄰居是哥斯大黎加人，在阿雷納爾火山附近長大。
文法句型
a Costa Rican
the Costa Ricans
用法筆記
This entry describes the noun use of the two-word phrase 'Costa Rican' (capital C and capital R). Unlike the anatomical noun 'costa' (rib), this is always a two-word compound. In informal conversation, speakers sometimes shorten the demonym to 'Tico' (masculine) or 'Tica' (feminine), but these are colloquial and not standard in formal writing.
常見錯誤
2. a rib-shaped bone, vein, or ridge inside a living organism that gives structural
肋骨；主脈
肋骨或類似肋骨的生物構造
a rib-shaped bone, vein, or ridge inside a living organism that gives structural support — common in human chest anatomy, leaf botany, and insect-wing entomology.
The doctor examined Yara's X-ray and found a small fracture in her right costa.
醫生檢查了 Yara 的X光片，發現她的右肋骨有輕微裂痕。
costa = rib in human anatomy
David observed the costa of a maple leaf under the microscope during biology class.
David 在生物課上用顯微鏡觀察楓葉的主脈。
costa = midrib of a leaf (botany)
Folake used a magnifying lens to trace the dark costa along a damselfly's wing.
Folake 用放大鏡觀察豆娘翅膀前緣深色的主脈。
Dr. Okonkwo told Kabir the X-ray showed a fractured costa that would heal in six weeks.
Okonkwo 醫生告訴 Kabir，X光片顯示一根肋骨骨折，六週內會癒合。
Hoa identified the fossil as a magnolia leaf from the Eocene by the pattern of its costae and veins.
Hoa 根據主脈與葉脈的紋路，鑑定這塊化石為始新世木蘭葉。
- rib
everyday English term for the human/animal chest bone; 'costa' is the formal anatomical name
- midrib
botany term for the central vein of a leaf
- costal vein
entomology term for the thick vein along the front edge of an insect wing
文法句型
the costa of [body part / leaf / wing]
plural costae
用法筆記
This is a technical term used mainly in medicine, biology, botany, and entomology. In everyday English, people say 'rib' instead of 'costa'. The Latin plural 'costae' is used in scientific writing. Do not confuse this word with 'Costa Rican' (the two-word demonym phrase listed above) or with 'costa' as a misspelling of 'coast'.