Self-activity
n. 自动；自发活动
🧩 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
I made an appointment with the doctor at three.
我和医生约好3点钟看病。
That'll put us both in the picture.
这样双方都能了解全面的情况。
As the cry was repeated several times, she ran to tell the manager who promptly rang up the fire brigade.
由于这种喊叫声重复了几次，她跑去报告经理，经理当即给消防队挂了电话。