Doorstops
n. 制止门过开之物（如钩环）( doorstop的复数形式 )
🗣️ 情景例句
Just a moment, I'll ask him.
稍等，我问一下他。
Every advantage has its disadvantage.
有利必有弊。
Such a messenger, receiving our radio and television signals,
这种自动化信息装置，在接收到我们的无线电和电视信号后，