Ertron
[医] 厄特朗, 维生素D2(商品名)
🗣️ 情景例句
you need to work at it, Grandpa.
你得常练它， 爷爷。
Music is his chief hobby.
音乐是他的主要业余爱好。
You must get up and get ready for school. If you don't go soon,you'll be late.
你得起床准备上学了。你如果不赶紧去，就该迟到了。