Tetrode
n. 四极管
🗣️ 情景例句
How does that look, Rob?
看起来怎么样，Rob？
I meet the boy whose aunt is a clerk.
我遇到那个男孩的姑妈是店员。
and assuming such an automatic messenger picked up our first broadcasts of the 1920's,
假定外星人的这种自动化信息装置接收到了我们二十世纪二十年代的第一次广播信号，