Their needs are pure sustenance, and their love and loyalty are without restraint.

它们索取的只是维持生计的粮食，却献出了无限的爱和忠诚。

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We can not live without some sustenance from the biological point of view, we are heterotrophic aerobic type.

我们的生活离不开一些寄托，从生物学的角度看，我们就是异养需氧型。

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Together with nuts, beans and grains, fruit provides all the sustenance a body needs without requiring the death, wounding or maiming of any other lifeform.

包括坚果、豆子和谷物，果食提供人类所有营养物质，同时不会使其它的生命死亡、受到伤害或者残疾。

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As for eating, try to consume around three or four meals a day and two snacks--bananas and peanut butter work well--and never go more than four hours without sustenance, says Loehr.

FORBES: Magazine Article

Islam also acknowledges the importance of the female gender in providing the guarantee for humanity's sustenance and development, without which the edifice of society would crumble.

CNN: Nuclear Nightmares

As great forces of history converge to human scale, this modern-day boom town feels like the Wild West but without the confident self-reliance: the articulate residents are painfully aware of the close link between their sustenance and their misery, and international bureaucrats reveal a terrible disconnection from the reality on the ground as they encourage the unchecked development.

NEWYORKER: Darwin's Nightmare