Whetstone
n. 磨石
✅ 同义词
📖 牛津释义
whetstone
n shaped stone used for sharpening tools, eg chisels, scythes, etc 磨石; 磨刀石; 油石.
🗣️ 情景例句
He emphasized that Marxism was scientific truth.
他指出马克思主义是科学的真理。
Do you have any goods to declare for customs?
你有任何物品要在海关呈报吗？
when a significant number of people are living permanently in space.
如果有相当数量的人永久性地住在太空，