Cowan screen
[化] 寇文(离心式)圆筛
🧩 词语组成解析
考恩（人名）
screen
[skrin]
n. 屏幕;银幕;屏风;
vt. 掩藏;庇护;检查;放映;
🗣️ 情景例句
As a matter of fact... I am hungry.
老实说……我饿了。
We couldn't help the accident.
我们未能防止事故发生。
Aunt Harriet lived in that leisurely age when servants were employed to do housework.
哈丽特生活在一个悠闲的年代，家务事都由雇来的佣人代劳。