Chemosensor
化学传感器
🗣️ 情景例句
Is it a two-bedroom house?
是两个卧室的吗？
Congratulations on your having passed the test.
我恭喜你通过了考试。
I repeated my question several times and at last he understood.
我把问话重复了很多遍。他终于听懂了。