| 单词 | 起落 |
| 释义 | 〔roll〕To move or advance with a rising and falling motion; undulate:起落，波动：起伏地运动或前进；波动：〔collapse〕Latin collābī collāps- [to fall together] 拉丁语 collābī collāps- [一起落下] 〔precipitate〕This usage is a natural extension of the use ofprecipitous to describe a rise or fall in a quantity over time:a precipitous increase in reports of measles is also an abrupt or sudden event. Though this extended use ofprecipitous is well attested in the work of reputable writers, it is still widely regarded as an error.这种用法是precipitous 用法的自然推广， 形容一段时间上数量的起落：麻疹报道数量的急剧增加 也表示一种急剧或突然的事件。 尽管precipitous 这一推广用法在许多著名作家的作品中得到了充分证实， 但它仍被广泛地认为是一个错误。〔groundside〕The part of an airport used for operations unrelated to the departure and arrival of aircraft.机场中用来进行与飞机起落无关的操作的部分〔zag〕many zigs and zags in the mountain road; the zigs and zags of the stock market.山路蜿蜒曲折；股票市场的起落不定〔sensitive〕sensitive stocks.行情起落的股票 |
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