balloon goes up

短语
英 /bəˌluːn ɡəʊ̯z ˈʌp/    美 /bəˌlun ɡoʊ̯z ˈʌp/|/bəˌlʉːn ɡəʉ̯z ˈɐp/

英文释义

短语
  1. Something exciting, risky, or troublesome begins. idiomatic
    — — When is your job interview? — The balloon goes up at 10 tomorrow.
  2. Used other than figuratively or idiomatically: see balloon, go, up.

词汇关系

相关词
when the balloon goes up trial balloon

词源

Probably from the releasing of a balloon as a signal for an event to begin, possibly popularized by the use of balloons by the British Army during World War I (1914–1918) as a signal for artillery fire to commence.
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