Uv
abbr. 紫外的（ultraviolet）
🗣️ 情景例句
Don't forget Susan.
别忘了Susan。
I slipped on the stairs and fell down.I broke my leg.
我在楼梯上滑倒了并且掉下来我弄断了腿的。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。