Pipelines projects must also be delivered with minimum impact on the environment whilst providing a return on investment for pipeline owners.

在管道工程为管道主提供资金回报的时候，它们必须在运输过程中对环境造成最小的污染。

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Another name that frequently surfaces in the 401(k) plot discussions is longtime retirement activist Teresa Ghilarducci, a professor of economics at The New School, who believes the 401(k) should lose all its tax advantages, and instead be replaced by something she calls Guaranteed Retirement Accounts, a system of mandatory retirement contributions by both employees and their employers, that would allow for a minimum, promised investment return.

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But framing the question in this way does not compel students to make rational quality-cost trade-offs because after colleges clear the minimum, it is no easier for students to get loans to colleges that offer a stellar return on investment than it is to get them for colleges that offer a poor one.

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