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
I'd like to come to the ten o'clock advanced class this morning.
我想今早十点来上你的高级健身班。
Work today, for you know not how much you may be hindered tomorrow.
今天有事今天做，明天可能事受阻。
As a matter of fact, it is the other way around.
事实上，情况正好相反。