plummet是什么意思_plummet怎么读_中英文释义(含例句用法)

plummet: plummet: see plumb
plummet (n.): late 14c., "ball of lead, plumb of a bob-line," from Old French plomet "graphite, lead; plummet, sounding lead," diminutive of plom "sounding lead" (see plumb (n.)).
plummet (v.): 1620s, "to fathom, take soundings," from plummet (n.). Meaning "to fall rapidly" first recorded 1933, perhaps originally among aviators. Related: Plummeted; plummeting.

词态变化

第三人称单数 plummets;
过去式 plummeted;
过去分词 plummeted;
现在分词 plummeting;

1. We"d revise to rewire the building, re plummet re - plumb it.: 我们必须给大楼重换电线, 重新使它立直.

2. Stocks that plummet to half their value aren"t losers, they"re"non - performers ".: 股票价格跌了一半的人不是失败者, 而是 “ 表现不佳”.

3. Mengniu and Yili have seen their shares plummet since the incident broke.: 自事件发生以来,蒙牛和伊利的股票大幅下跌.

4. The prices of the shares may ~ or plummet within one day.: 股票价格有可能在一天之内飞速上升或骤然下跌.

5. Pieces of rock plummet down the mountainside to the ground below.: 岩石一块块顺著山的陡坡滚落到地面.

plummet method 测锤法

plummet level 定垂线尺

lead plummet 铅垂球

optical plummet 光学垂准器,光学对点...

plummet line 垂直线

plummet method 测锤法

lead plummet 铅垂球

plummet lamp 垂灯

optical plummet 光测铅垂线，光测悬锤，光学垂准器，光学对点器

double prism plummet 双棱镜垂准

optical plummet centring 光学垂线对中

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