| 单词 | mechanical devices |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔extinguisher〕Any of various portable mechanical devices for spraying and extinguishing a fire with chemicals.灭火器：一种用化学药品灭火的便携式机械装置美国传统〔mechanically〕Most mechanical devices require oil as a lubricant.绝大多数机械装置都需要用油作为润滑剂。柯林斯高阶〔orthotics〕The science that deals with the use of specialized mechanical devices to support or supplement weakened or abnormal joints or limbs.整直学，矫正学：一门研究如何利用特定机械装置支撑或填补退化或畸形的关节或四肢的科学美国传统 |
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