Mechanical efficiency - [机] 机械效率，怎么读怎么用

🧩 词语组成解析

mechanical [mɪ'kænɪkəl]

adj. 机械的，机械学的;呆板的;体力的;手工操作的;

mechan(machine)+ical(形容词后缀)→机械的；呆板的

efficiency [ɪ'fɪʃənsi]

n. 效率，效能;实力，能力;[物]性能;功效;

ef出+fic做+iency表名词 →做出事情→ 有效率

and a new paint job in the schoolrooms.

和重新油漆教室。

What should this sandwich be seasoned with?

这些三明治该加些什么调味品好？

I got up early and bought thirty-seven cards.

我早早起了床，买来了37张明信片。

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