The deposit is restricted by structure and morphology. Well confined basins are favourable to the mineralization.

矿床受构造一地貌制约，盆地封闭好者对成矿有利。

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If a greenhouse is extra tight, the airflow from the inlet side of the house to the exhaust fan will be relatively well confined.

如果温室很密闭，室内从进风面到排风扇的气流就比较好控制。

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Arsenic AND WELL water: The world's worst toxic problems are not confined solely to industrial pursuits.Arsenic leaching into groundwater afflicts some 750,000 people, largely in south Asia.

含砷的井水：世界上最严重的有毒问题不只局限与工业，浸析在地下水的砷影响了主要分布在南亚地区的约75万人。

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"Using ultra-short light pulses gives us the ability to focus in a well confined region and the ability for intense radiation, " said Parigger.

ENGADGET: Researchers develop femtosecond laser that can diagnose, blast cancerous tumors

As a work of popular science it is exemplary: the focus may be the numbers, but most of the mathematical legwork is confined to the appendices and the accompanying commentary is amusing and witty, as well as informed.

ECONOMIST: What to do?

Helicobacter's activities seem, so far, to be confined to the stomach (though the bacterium has now been implicated in cancer there, as well as in its ulcers).

ECONOMIST: Bugged by disease