Bhcs
abbr. 圆头帽螺钉；井眼补偿声波测井
🗣️ 情景例句
Are the bathrooms on this train clean?
火车上的卫生间干净吗？
Talk of the devil, and he is sure to appear.
说鬼鬼到。
You're not busy doing anything, are you?'
你不忙，是吗？”