Esicon
二次电子导电摄象管
🗣️ 情景例句
Is unable to express himself clearly.
不能很好地表达自己。
You will leap for joy when you hear the answer.
如果你听到了答案，你会高兴的跳起来的。
When you have finished your experiment, please tidy the lab and put everything back in the cupboards.
做完实验后，请你们把实验室整理好，并把所有的东西放回器皿柜。