Halopolymer
卤代聚合物
🗣️ 情景例句
My mother passed away.
我母亲去世了。
That important man is very unassuming in his manner.
那个要人彬彬有礼，是一位毫不摆架子的人。
'No, not at all,' I answered.'I'm going to. '
“不，不忙，我打算去。。。。。。”我回答。