Spontaneous motion
[电] 自发运动
🧩 词语组成解析
motion
['məuʃən]
n. 运动;手势;动机，意向;请求;
vt. 打手势;向某人点头或摇头示意;打手势要求[指示];
vi. 运动;打手势;
🗣️ 情景例句
It all sounds so easy.
一切听起来竟是如此简单。
There are many training classed and night classes.
有许多培训班与夜校。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。