Fluorosensor
氟传感器
🗣️ 情景例句
Richard told us all about you.
Richard跟我们谈起你 。
All men cannot be first.
不可能人人都得第一名。
It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool.
他们很快便适应了游泳，以致能捡起池底的物品。