🗣️ 情景例句
I want a 3-button wireless mouse.
我想要一个三键光电鼠标。
He keeps on studying ecology.
他不断攻读生态学。
Alcohol may be a medical disinfectant, but should not be relied upon to sterilize water.
酒精可能是医学上的消毒剂，但决不可用来消毒饮用水。