Castoridae
[动]河狸科
🗣️ 情景例句
Ladies and gentlemen,
各位女士， 各位先生，
The bus is bigger than other cars, but too crowded.
巴士虽然比小汽车大，但是太拥挤了。
He could not wash himself or get dressed.Instead, his sister or his parents had to help him.
他自己不能洗澡或穿衣服，他的姐姐或父母亲就只好帮他的忙。