Uvm
[医][=ultraviolet meter]紫外线计
🗣️ 情景例句
All right. OK.
好吧。行了。
The world is a ladder for some to go up and some down.
人间犹如一架梯，有人缘梯上升，有人顺梯下降。
How are you getting on with your English lessons?
你的英语课学得怎么样了？