It's built with something called a buttressed core: you have a strong centre section with legs that buttress it all the way up.

它的建造依赖这一个支撑核心：你有一个坚强的核心部分来保证整个塔是直的。

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To begin, lie the shirt out on a table and then draw an imaginary line half-way down the shirt and another half-way between the outside edge and the centre section.

首先，把衬衫平整地摊在桌子上，在衬衫中间划一道想象中的线，再在外围和中间区的中线位置再画一条线。

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For tubular structures, such as blood vessels, the hydrogel is printed in the centre and around the outside of the ring of each cross-section before the cells are added.

在生产管状结构，例如血管时，每一层细胞涂布之间，水胶会被涂布到血管截面的内外来形成支撑。

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This would give wildlife an unbroken pathway across the centre section of one of the most populous states in the union.

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The existing bridge in Woking town centre and a section of the canal towpath will be closed from 23 April to allow construction to start.

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The concerns centre on a section of the English test, where pupils are asked to produce a piece of creative writing - an area which has attracted complaints in recent years.

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