Checknut
防松螺母, 保险螺帽, 锁紧螺母
🗣️ 情景例句
Have you ever been there?
你去过那儿吗？
When do you expect to have this ready for sale?
你希望此种商品何时上市出售呢？
while others rub their hands over his skin to the accompaniment of a monotonous and soothing chant.
其他人唱着单调的歌声用手抚摸象的皮肤。