A digger had carved out three trenches, each about 50 metres long and 1.5 metres deep.

挖掘机刨了3个大坑，每个约50米长、1.5米深。

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The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15 light years from Earth in perfect lockstep.

第一个是一对质量与木星差不多的行星，这对行星步调一致地围绕距离地球15光年的母恒星旋转。

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Each about $10-$15 plus shipping.

每组加运费大概需要10-15美元。

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Two hundred of these stations were built,each about thirty-two kilometers apart.

VOA: special.2010.04.26

We're moving into the large on-term across next term where we'll teach 600 students in six sections, of about 100 each.

我们准备下学期,搬去更大的地方,就能一次教六个班的学生，每个班100人左右。

麻省理工公开课 - 媒体、教育、市场课程节选

It is not about providing opportunities for people to get to know each other and to build friendships.

不是为人们提供机会,互相了解,建立友谊。

麻省理工公开课 - 媒体、教育、市场课程节选

Inside, they discovered more than a half-dozen fireworks, each about 8 inches long, according to the affidavit.

NPR: Texts, TV, Then Trouble For Bombing Suspect's Pals

The two Grail probes, called Ebb and Flow, were each about the size of a washing machine.

BBC: Nasa reveals new information about moon probes crash sites

In three locations, each about 15 blocks apart, giant trucks pumped water out of flooded office buildings.

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