Checknut
防松螺母, 保险螺帽, 锁紧螺母
🗣️ 情景例句
Bye-bye. It's all set. I'm going.
再见。都安排好了。我现在就去。
I'm sorry to interrupt, but I'd like you to explain that a little more.
很抱歉，我插个嘴，我希望你多解释一些。
I can understand why.
其原因我能理解。