Preventine maintenance
[电] 预防的维持
🧩 词语组成解析
🗣️ 情景例句
He just can't keep a steady job.
他就是不能安心地在一个地方工作。
You are fatter than I am.
你比我胖。
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已经设计出了一些仪器，它按照一定的安放方式就可测绘出这三种运动的曲线图。