Chemical retardation
[建] 化学阻滞
🧩 词语组成解析
retardation
[[ˌritɑr'deʃən]]
n. 迟延, 妨碍, 阻止\\n[化] 缓聚作用
🗣️ 情景例句
Good day.
再见！
I have to hang up now.
我得挂电话了。
Every year, several classes visit the factory.
每年都有好几个班去参观这家工厂。