Plastacele
粉状醋酸纤维素
🗣️ 情景例句
Sam, this is Susan. Sam
我是Susan。
I'm up to my ears in work.
我忙死了。
And you lent me some money too, which I never repaid you.
你还借给我一些钱，这笔钱我还没有还你呢。