Limescale
n. 水垢; 垢石
🗣️ 情景例句
He treats everyone with courtesy.
他对待每一个人都很有礼貌。
Since we are likely to place sizable orders regularly we hope that you will make some special concessions.
由于我方将定期大批量订购，希望贵方作出一些特殊的让步。
Can you tell me why?
能告诉我什么原因吗？