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fluctuation:波动;变动;动摇
fluctuations in policy 政策变动
climatic fluctuations 气候变化
eat into:逐渐耗尽
Her extravagance ate into her husband's inheritances.
她挥霍无度,使她丈夫所得的遗产日益减少.
plummet:to fall suddenly and quickly from a high level or position 暴跌;速降
See also: plunge Synonym
Share prices plummeted to an all-time low. 股票价格暴跌到历史最低点.
Her spirits plummeted at the thought of meeting him again. 一想到又要见到他,她的心情便直往下沉.
The jet plummeted into a row of houses. 那架喷气式飞机一头栽进一排房子里.
go up in smoke: if your plans, hopes, etc.go up in smoke, they fail completely 告吹;成泡影;破灭
melt away:to disappear or make something disappear gradually （使）慢慢消失
At the first sign of trouble, the supporters melted away. 那些支持者一看要有麻烦便作鸟兽散.
buy something in
to buy something in large quantities 大量购买
