Understand the emotional cycle - Life is an emotional roller coaster.

了解情绪周期——生活就像是乘坐情绪的过山车。

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Their life cycle helps man provide himself with a basic food—fish.

鱼类的生命周期使其成为一种人类的基本食物。

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We can see how the product life cycle works by looking at the introduction of instant coffee.

通过观察速溶咖啡的推行，我们可以看到产品生命周期是如何运作的。

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The independent group certifies products and services as environmentally friendly through a life-cycle evaluation - looking at the raw materials and the manufacturing process, transportation and recycling of old products.

VOA: standard.2009.03.30

The kinds of analysis that report massive, sustained, falling costs for renewable plants often assume that capital costs are recovered in steady-state fashion over the full, rated, life-cycle of the machinery, when in fact investors in these systems always strive to recover their costs much sooner to beat the diminishing returns that set in once two-thirds of the life-cycle is spent.

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The batteries are 100 percent recyclable, and currently have 5, 000-cycle life (the company wants 20, 000 cycles, plus 20-year calendar life).

FORBES: 4 Cool Tech Ideas Helping the Planet

Gem of the Ocean is the latest in Wilson's 10-part cycle about African-American life in the 20th century.

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