Checknut
防松螺母, 保险螺帽, 锁紧螺母
🗣️ 情景例句
Your pressure is 120 over 75, and that's fine.
你的收缩压是120， 舒张压 75。
Innocent fool
无罪的傻瓜
Despite the fact that the bottle is tinted a delicate shade of green, an observant visitor would soon notice that it is filled with what looks like a thick, grayish substance.
尽管那只瓶子呈淡绿色，但细心的客人很快就会发现瓶里装的是一种看上去黏稠，颜色发灰的东西。