Systematics
n. 分类学\\n[计] 分类学, 系统学
✅ 同义词
🗣️ 情景例句
sacrifices have to be made by one partner from time to time.
总要有一方必须不时做些牺牲。
She's a widow.Her husband died last year.
她是一个寡妇。她的丈夫去年死了。
There is no need to say anything to the other worker.
你没有必要跟那个工友说什么。