| 单词 | 水的压力 |
| 释义 | 〔blowhole〕An opening or one of a pair of openings for breathing, located on the top of the head of cetaceans, such as whales and dolphins. The blowhole is opened by muscles upon surfacing and closed by the pressure of water upon diving.鲸鱼类的喷水孔：在鲸目动物（如鲸、海豚）头顶，用于换气的单鼻孔或双鼻孔中的一个。当鼻孔在水面上时，由动物肌肉牵引而张开，在水下时，由水的压力合上〔forge〕To form (metal) by a mechanical or hydraulic press.锻制：通过机械或水的压力锻制〔jack〕A usually portable device for raising heavy objects by means of force applied with a lever, screw, or hydraulic press.千斤顶，起重机：通过杠杆、螺丝钉或水的压力把重物提起的便携式装置 |
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