Rief
abbr. recycling isoelectric focusing 再循环等电聚焦
🗣️ 情景例句
Are the bathrooms on this train clean?
火车上的卫生间干净吗？
A woman's work is never at an end.
妇女的活计做不完。
I don't have any cash with me.
我身上没带现金。