Dinaphthylmethane
二萘甲烷
🗣️ 情景例句
Don't be lazy, the older you get, the harder it will be to learn.
别偷懒，年纪越大，学起来就越难。
All right.
好吧。
He can't make it today. He has to stay at home.
他今天不行了。他得呆在家里。