Basanite
n. 试金石
🗣️ 情景例句
I think you are capable of much better than this.
我认为你能做得比这更好。
He is surprised.
他大为惊讶。
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。