Carbox-
羧基
🗣️ 情景例句
I want an expensive luxury car.
我想买一辆昂贵的豪华汽车。
Do flying saucers really exist?
飞碟真的存在吗？
Is it a black cat with one white ear and two white legs?
是那只长着一只白耳朵和两条白腿的黑猫吗？