Xanthates
黄原酸盐
🗣️ 情景例句
A little further back, Tom.
再往后一点 Tom。
Will you take that library book back for me?
你能帮我把书还回图书馆吗？
We'll get used to that, Bill,' said the vicar.
“大家慢慢就习惯了，比尔，”牧师说。