Ditan
二苯基甲烷
🗣️ 情景例句
Your duties include checking the post and distributing it.
你的职责是检查和发送邮件。
Don't drop that bottle on the floor.
别让那只瓶子掉到地上。
Yes, I washed before breakfast.
洗了，我早饭前洗了脸。