Checknut
防松螺母, 保险螺帽, 锁紧螺母
🗣️ 情景例句
Are you kidding me?
你在取笑我？
The voice is not distinct.
声音不清楚。
That sounds interesting. That was a hundred years ago, wasn't it?
听起来很有意思。那是一百年前的事了，不是吗？