parachute jump的用法和樣例：
例句
- I volunteered to do a parachute jump to raise money for charity but I got cold feet at the last minute and didn't to through with it.
為慈善事業(yè)籌集資金我自愿參加跳傘，可是在最后一刻我臨陣害怕了，結果沒(méi)有完成任務(wù)。 - Our first parachute jump was an exhilarating experience.
我們第一次跳傘感到興奮莫名。
