Checknut
防松螺母, 保险螺帽, 锁紧螺母
🗣️ 情景例句
Why advanced?
为什么是高级的？
She is very well, thank you.
她很好，谢谢。
the gaoler replied: 'The light is indeed dim, sire, I must get my glasses.'
“陛下，这儿光线的确太暗了，我得去眼镜拿来。”