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
Really, Grandpa?
真的， 爷爷？
Prosperity makes friends and adversity tries them.
富裕招致朋友，困苦考验朋友。
All those who have contributed towards the gift will sign their names in a large album which will be sent to the headmaster's home.
所有凑钱买此礼品的人都将自己的名字签在一本大签名簿上，签名簿将被送到校长的家里。