Sems
(sem 的复数) abbr. 标准电子组件（Standard Electronic Modules）；扫瞄式电子显微镜（scanning electron microscope）
🗣️ 情景例句
Why were you out of work for so long?
你为何这么久没有工作？
Wash a dog, comb a dog, Still a dog, remains a dog.
本性难移。
I know that he's doing his best, but he says that he is a little weak in Chinese.
我知道他非常努力，但他说他的中文有点儿差。