Periston
聚乙烯基吡咯烷酮
🗣️ 情景例句
He appeared ill at ease at the party.
他在宴会上显得很拘谨。
Chains of gold are stronger than chains of iron.
金链锁人比铁炼更牢靠。
I develop films myself.
我自己冲洗照片。