Limescale
n. 水垢; 垢石
🗣️ 情景例句
Do it for Robbie, Dad.
爸爸 ，给Robbie示范示范。
Spend money like water.
挥金如土。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。