Bbh
[医][=benzene hexachloride]六六六，六氯化苯
🗣️ 情景例句
I don't care how much I have to study. I have to pass this exam.
我不介意要学多少东西。我必须得通过考试。
It is better to do well than to say well.
理论好不如实际好。
Hello, Helen.
你好，海伦