Elcometer
膜厚测定仪
🗣️ 情景例句
How many classes are you taking this semester?
这学期你有多少课？
Evil communications corrupt good manners.
交往恶劣，有损风度。
We'll leave some evenings free,that is,if it is all right with you.
如果你们愿意的话，我们想留几个晚上供你们自由支配。