The teaching day finishes at around 4 p.m.

教学日在下午4点左右结束。

《柯林斯英汉双解大词典》

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When in the field, their work starts at around 4 am.

在野外，他们大约在凌晨4点开始工作。

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4,000 programs around the world, it says, use the GMAT as an important part of their admissions process.

VOA: special.2009.01.08

If the referenced cities, the first cities, are 4,200 miles apart, the answers for the next two will center around 4,200 miles.

如果先前提到的城市，前面的两座城市，相距4200英里，那么人们对于后两座城市距离的回答,便会集中在4200英里附近。

耶鲁公开课 - 金融市场课程节选

Yeah, so, kids usually go to parties at least, you know, usually around 3 or 4 days a week.

好，所以，孩子们通常至少每周有三四天都去派对。

派对很好玩 - SpeakingMax英语口语达人

The underground chapel contains the remains of around 4, 000 friars buried between 1500 and 1870.

BBC: Rome��s most mysterious places

Time saved varied from around 4 minutes in Germany to 81 minutes in the United States.

FORBES: Calculating The True Cost Of BYOD

The yields during that time have compressed a bit, to around 4.7% to 5.2% net.

FORBES: China Is Poised To Top Japan, Australia Among Int'l Commercial Property Investors In Asia