The brain requires a constant supply of oxygen.

大脑需要持续的供氧。

《柯林斯英汉双解大词典》

A constant supply of food should be given until the cold is over and spring has come.

在严寒过去、春天来临之前，应该持续供应食物。

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Cyberspace produces a constant supply of words and phrases.

互联网领域也不断涌现出新的词汇和短语。

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In the past few months, the cost of wheat and sugar has more than doubled they say, and cooking gas, in constant short supply, can cost three times as much as it did a few months ago.

VOA: standard.2010.04.20

Magnetic tapes can degrade within a decade, while hard disks are expensive and need a constant supply of electricity.

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For example, it is important to ensure that a rural store has a constant supply of soap to sell to local families.

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The first carries compressed air, water, communications and a constant supply of electricity to power lights that are intended to simulate daytime and nighttime.

CNN: STORY HIGHLIGHTS