Checknut
防松螺母, 保险螺帽, 锁紧螺母
🗣️ 情景例句
Where was the house?
房子在什么地方？
No matter what happens, don't look excited.
不管什么事情发生，你总不要显得激动。
I reflected that there must be a great many local people besides myself who wished to take advantage of this excellent service.
我想除我之外，想利用快车之便的也一定大有人在。