With developing depth of underground mines increasing, the underground heat harm becomes more and more serious in some non- ferrous & coal mines in China.

我国部分有色和煤炭地采矿山，随着开采深度的增加，井下热害日显严重。

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But it is clear that a city oft criticized as commercial and superficial is finally developing some cultural depth.

BBC: High-end art in Hong Kong

Developing countries don't have the capital depth we enjoy.

FORBES: Fact and Comment

This can limit the depth of their conversations and keep them from developing trust and extensive networks.

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