将该区与液体介质保持接触，该液体介质用来补充区内的液体并保持区中混合物组分基本不变。

The zone is maintained in contact with a liquid medium that serves to replenish the liquid in the zone and maintain the composition of the mixture in the zone substantially constant.

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在网站后台，贡献者可以创建主题区（叫做“超级问题”），并且补充和这些主题相关的问题和答案。

On the back end, contributors will be able to create topic areas (called Super Questions) and add questions and results underneath those topics.

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拉鲁是拉萨的一部分，无论是国家还是自治区，都为保护它做了很多努力，”Gyanpel补充说。

Lalu is part of Lhasa and we've done a lot to preserve it, both at provincial and national level,” said Gyanpel.

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