Megnetron
磁控电子管
🗣️ 情景例句
What's this about, Harvey?
这是怎么回事 Harvey
I can only afford to watch television for an hour gonight because I have homework to do.
因为我要做家庭作业，所以今晚我只能花一小时看电视。
Yes, they're our new reading books. Is the box too heavy?
对，这些是我们的新教科书，这个箱子重吗？