Self-propulsion
n. 自力推进
🧩 词语组成解析
self
[self]
n. 自己;本人;本性;私利;
adj. 同一的;纯净的;单一的;
vt. 使自花授精;使近亲繁殖;
vi. 自花授精;
🗣️ 情景例句
Yes, most of them are, except for the plastic parts.
对，除了塑料制品其他都是。
I ought to think about it.
我应该再三考虑。
I saw him playing football on the playground.
我看见他在操场上踢足球。