Pumicing
v. 浮岩, 浮石, 轻石（轻而多孔, 可以去除皮肤污垢或使皮肤光滑, 其粉剂可作清洁剂或抛光剂）( pumice的现在分词 )
🗣️ 情景例句
OK, hold to the right.
好， 在右边停住。
The first step to virtue is to abstain from vice.
避开作恶是走向美德的第一步。
But which language is the most widely spoken in the world?
但是世界上哪种语言运用最广泛？