Clophen
(多)氯化联苯
🗣️ 情景例句
She flunked her English examination.
她的英语考试失败了。
In elementary school,the child learns to read and write.
在小学，孩子学习读写。
and by the time he is grown and able to take part in its activities,
等他长大了，能做各种事了