Estron
n. 醋酸纤维\\n[化] 埃斯特纶(醋酯长丝)
🗣️ 情景例句
I'm having some trouble keeping food down.
我吃东西时感到困难。
It is no use crying over spilt milk.
泼水难收。
What's the point of going to college?
上大学有何用？