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
Will you be so kind as to help me out of the difficulty?
帮助我克服困难，好吗？
Though thy enemy seem a mouse,yet watch him like a lion.
敌人即使小如鼠，防他也要如防狮。
Spiders are busy for at least half the year in killing insects.
蜘蛛至少有半年在忙于吃昆虫。