Mantle material can sink at a plate boundary, and then flow back upward farther away, pushing on the crust - a process called small scale convection.

地幔，这种物质可以在板块边界处下沉，然后向上回流到较远的地方，再与地壳相碰撞——这个过程被称为小规模的对流。

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There is a boundary line over 4700 kilometers between China and its five South Asian neighbors and their exchanges can be traced back to more than 2000 years ago.

中国与5个南亚国家接壤，边界线长达4700多公里。中国同南亚国家的交往从2000多年前就开始了。

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Inside the boundary wall the simple finish continues - glass curtain walls broken up only by wooden doors and shutters are set back under an overhanging roof.

室内的界墙进一步延续——只有通过悬垂的屋顶下的木门和百叶窗上的玻璃幕墙稍微打破了这种延续感。

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He bowled Mark Boucher, had AB de Villiers caught by wicket-keeper Brendon McCullum sprinting back to the boundary, and Paul Harris then went slashing behind.

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Some of the strokes were as good as ever, one exemplary punch off the back foot against Tremlett rocketing through mid-off to the boundary.

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Ramdin had hit one boundary before playing back to Muralitharan and being hit in front of off-stump - the fifth man in the innings to fall foul of the lbw rule.

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