In our on-going efforts to conserve resources, beginning in 2011, certificates will be printed upon request.

鉴于我们不断努力保护资源，自2011年起，证书只应要求而作。

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Only in the 20th century have people become conscious of the fragility of nature and thus started to conserve resources.

直到20世纪人们才意识到大自然的脆弱，因而开始节约自然资源。

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The Earth does not have an inexhaustible supply of resources, so every effort should be made to conserve resources and limit the impact of human activity on the planet.

地球上的资源并不是取之不尽、用之不竭的，所以我们应该尽全力保存资源，限制人类活动对地球的冲击。

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That is because dictation programs try and anticipate what you are likely to say next in order to conserve system resources.

FORBES: Saline tube is a p.m.

As part of the global effort to conserve energy resources, governments have begun to mandate the phase out of traditional lighting.

FORBES: How To Spur Mass Market Consumer Adoption Of LEDs

The Toledo Institute for Development and Environment works today with villagers to conserve natural resources and biodiversity.

BBC: Belize��s lessons in eco-tourism