The Sandia prototype's solar collector has an area of about 20 square meters (215 square feet) for a reactor the size of a beer keg.

桑迪亚原型的太阳能采集器有一个约20平方米（215平方英尺）的面积，用于一个啤酒桶大小的反应堆。

youdao

Most of the city's sights can be seen within a five-square-mile area in the North End, the historic center of the city.

这座城市的大部分景观都可以在北端的一个5平方英里的区域内看到，这块区域是该市的历史中心。

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The planning department suggests restricting the floor area of a house on such a lot to 3,088 square feet—less than half the present size.

而规划部门建议将所允许的建筑面积减少到3,088平方英尺，这将比原来的一半还少。

youdao

From Mel Fisher's Museum, we walk the short distance to Mallory Square, the center of Key West's historic area.

VOA: special.2010.03.22

In Union Square, I think one of the best things of this area is the market that they have a few days a week.

在联合广场，我觉得这个地方最好的一点就是每周开放几天的集市。

去过超市吗？ - SpeakingMax英语口语达人

But now,military officials say the area held by the Tamil Tigers has been reduced to just a few square kilometers of beachfront.

VOA: special.2009.05.16

The Inner City covers an area of 2.99 square kilometres (1.15 square miles) and the outer walls surrounding the city east and west of the Euphrates enclose an area of 9.56 square kilometres (3.69 square miles).

UNESCO: OFFICE FOR IRAQ

The move applies to the majority of shopping and residential streets in the area, which covers a two and half square mile block of the city.

BBC: Brighton and Hove city centre to become 20mph zone

However, BBC Brasil spoke to experts who said 1, 300 people ought to have have been the maximum permitted capacity of the building, based on the club's floor area of 650 square metres (7, 000 square feet).

BBC: Could Brazil's club fire have been avoided?