They must be kept inside a closed area.

而是把它们圈养在一个封闭的地方。

youdao

You eventually fill the closed area with various colors.

最后再用不同的颜色填充这些封闭的区域。

youdao

A free trade zone is an isolated, closed area, usually adjacent to a sea port.

保税区是个孤立、封闭的区域，经常濒临海港。

youdao

And normally bustling streets near the protest area are empty with shops closed and few people daring to walk on the streets.

VOA: standard.2010.05.15

"The evidence provided by the commission's own scientific advisers suggests that the case for such a closed area has not been made, " Mr Finnie said.

BBC: NEWS | UK | Scotland | Experts urge radical fishing ban

The closed area now covers 52, 395 miles, or 22 percent of the federal waters in the Gulf, down from 37 percent at its peak, NOAA said.

CNN: STORY HIGHLIGHTS

Police closed the area around the Psychiatric University Clinic, about 500m from the gallery, on Monday after a suspicious car was found.

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