Bitermitron
双端管(M型非重 入返波正交场放大管)
🗣️ 情景例句
How long will this letter take to get there?
这封信需要多长时间到那儿？
One man's meat is another man's poison.
一个人的佳肴常为另一人的毒药。
Which speech are you going to listen to this afternoon?
今天下午你准备去听哪个报告？