drop head

基本解释

Slowly drop your head forward, letting the weight of the head gently stretch your neck.
慢慢地把头朝前低下，让头部重量轻轻地拉紧脖子。
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Slowly drop your head to the left, trying to touch your left ear to your left shoulder.
慢慢地把头偏向左边，试着让左耳接触左肩膀。
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The photoelectric liquid drop sensor(PLDS) is based on the optical fibers positioned inside the drop and the special capacitive sensor composed of the drop head and a cylindrical ring plate.
介绍一种用于液体特性研究的光电液滴传感器（PLDS），其原理是基于插入液滴内部的光纤，及由滴头和环形极板构成的电容传感器。

Though another marginal new high is still possible over the near term, the market internals suggest stocks are likely to drop as we head into the end of the month.
FORBES: Apple Reverses, Stocks Top Out
Moskowitz figured the next shoe to drop might fall on his head: TRE could be forced to raise cash by dumping Ceradyne on the market.
FORBES: The Hug Of The Bear