Sharpstone
尖角石; 尖角巖屑
??? 情景例句
I'm going to excuse myself.
很抱歉失陪。
I'm under a lot of pressure.
我壓力很大。
They had just had enough time to swim out of danger when the boat again completed a circle.
他們剛剛來得及游出危險區，快艇就又轉完了一圈。