Thermionic tube
[电] 热离子管
🧩 词语组成解析
a. 热离子的\\n[电] 热离
🗣️ 情景例句
One step at a time.
做事要一步一步来。
You two don't have much contact
？ 你们俩没怎么联系吗？
This one is 3 yuan. That's dear.
这支笔三块钱，太贵了。