定义
a sweep: 范围，席卷
a sweep 不要与动词to sweep(扫地)混淆了。
to sweep: 打扫，扫除
This is an irregular verb:
I sweep / I swept / I have swept
sweeping (changes): 宽广的，宽阔的，广泛的
注意：不要把形容词sweeping（宽阔的）与动名词sweeping（正在扫地）混淆了。
- "Why is he sweeping the street?"
- "Marshall was doing his daily sweep of Amarillo's natural wildlife preserve, which borders Warbuckle's ranch on three sides."
- "Hank : If you must know, I'm sweeping the streets for a living."
- "We are proud to announce sweeping reforms here at Warbuckle's department stores."
- "We are proud to announce sweeping reforms at Warbuckle's department stores in the interest of philanthropy."
- "Edward : No, I was talking about your sweeping – it's terrible."
