jack-knife

美

第三人稱單數:?jack-knifes;過去式:?jack-knifed;現在分詞:?jack-knifing;

jack-knife (n.): also jackknife, large pocket knife, 1711, probably American English, "perh[aps] associated with some sense of JACK sb.1, but compare jackleg knife" [OED]; see jack + knife (n.). Jackleg was a U.S. colloquial term of contempt from c. 1850. On another theory, so called because it originally was associated with sailors. As a kind of swimming dive, from 1922. As a type of tractor-trailer accident, 1966. Both from the notion of folding, as the knife does.
jack-knife (v.): 1776, "to stab," from jack-knife (n.). Intransitive meaning "to fold or bend" the body is said to date from the time of the American Civil War. The truck accident verbal sense is from 1949. Related: Jackknifed; jackknifing.

1. This guy, Jack Smith, does he go by the name of Jackal?: 這個叫杰克·史密斯的家伙是不是還有個名字叫杰凱爾？

2. Jack had attended these meetings as a matter of routine for years.: 數年來，杰克把參加這些會議當成是例行公事。

3. Auntie Hilda and Uncle Jack couldn't fuss over them enough.: 希爾達姨媽和杰克姨父對他們寵愛有加。

4. Jack took out his notes and talked for just under an hour.: 杰克掏出他的筆記，講了將近一個小時。

5. An American judge yesterday dismissed murder charges against Dr Jack Kevorkian.: 昨天一個美國法官駁回了對杰克·凱沃爾基安醫生的謀殺指控。