Polycarboxylic
[机] 多羧酸的
🗣️ 情景例句
Speaking of mother and of father
谈到孩子的爸， 孩子的妈，
I'm John Smith.
我是约翰、史密斯。
There is no superior 'they' in the shape of managements and hotel hierarchies to darken his holiday days.
但在露营地里根本不会有管人的人上人"和酒店里的等级制度来使露营者的假日过得阴郁低沉。