The investigations show that the secondary maintenance for steel pipe piles by the methods of underwater coating and drainage covering ia an effective measures.

研究表明，采用水下涂料和排水护套法对钢管桩进行二次维护是行之可效的。

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Paths and secondary roads were improved only at the request of communities who were willing to participate in construction and maintenance.

只有在那些愿意参与建设和保养公路的社区提出要求后，乡间小路和二级公路才有所改善。

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Such artifacts are viewed as secondary, and therefore as a future maintenance burden.

这样的工件被视为次要的，因此成为未来维护的负担。

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Actual Justice becomes secondary to the maintenance of the stats.

FORBES: The Revolving Door at the Department of Justice