Mechanical efficiency
[机] 机械效率
🧩 词语组成解析
🗣️ 情景例句
In town. At the hardware store.
在镇上。在五金行里。
I hope you bring his quitar with him.
我希望你带他的吉他一起来。
It was spring,but the weather was awful.It rained all the time.
是春天，但天气太糟了。一直在下雨。