Superplasticizer
超增塑剂
🗣️ 情景例句
Are you sending it by regular or by speed?
你要寄平信还是快递？
What's the shape of your balloon?
你的气球是什么形状？
It was usually very quiet, and he could see the park from his window.
那儿通常很安静，从他的窗户他可以看见公园。