We have lived in an age of wanton waste, and there is value in practicing conservation that goes far beyond our own bottom line.

我们生活在一个肆意浪费的时代，保护环境的价值远远超出了我们自己的底线。

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This airflow pushes waste toward the bottom of the toilet, drawing it into a bag, holding solid waste, but letting the air through.

这样一来，排泄物会被气流抽到马桶底部的一个袋中，固体部分被收集起来，空气则被过滤掉。

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This outlet pipe is at the bottom of a giant phosphate waste impoundment in Florida, and forms a stream that eventually empties into the water table.

这是佛罗里达州一座巨型磷酸盐废料渠的排通管道，它排出的工业废料汇集成流，最终与地下水汇合。

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To the bottom would be lowered waste-bearing metal canisters a foot across and 15 feet long.

FORBES: The Big Dig

To put surplus food to better use, the Environmental Protection Agency is partnering with businesses and organizations in the Food Recovery Challenge, which is helping participants support their communities through food donation and protect their bottom line by reducing waste.

WHITEHOUSE: Presidential Proclamation -- America Recycles Day, 2012

Some of the bottom tranches that American Express holds are toxic waste from its own deals.

ECONOMIST: ��Structured finance�� can bring unstructured losses