Undertread
n. 底胎面(指轮胎的加固层)
🗣️ 情景例句
Maybe soon.
也许很快就会。
Five cats and a man were involved in an accident.
五只猫和一个男人被卷入那场意外里面。
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，