This micro-UV device floats and is small enough to use in a glass.

该微紫外装置能够漂浮而且小到可以在玻璃杯中使用。

youdao

This micro-UV device floats and is small enough to use in a glass.

该微紫外装置能够漂浮而且小到可以在玻璃杯中使用。

youdao