Moving up a layer has a cost in terms of adopting certain practices in development, build, and operations, but also has benefits.

就开发、构建和运营时所采用的具体实践来说，升级到上一层会有成本，但也会有好处。

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That saves time per build if your system is set up correctly, but it can cost you a lot of time if it isn't.

如果您的系统已经正确设置，那么每次构建时就可以节省大量时间，不过如果环境未设置好，就会浪费许多时间。

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This tree implementation (package com.icl.saxon.tinytree) takes up far less memory and is quicker to build, at the cost of slightly slower tree navigation.

该树实现(包com . icl . saxon . tinytree)占用极少的内存，并且构建过程更迅速，但其代价是浏览树的速度会稍微慢一点。

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We didn't do that, made mistakes in the build-up to the goal and it cost us.

BBC: St Mirren manager Gus MacPherson

In America, new tax breaks on health savings accounts make it attractive for individuals to build up nest-eggs to pay for their increased share of the cost.

ECONOMIST: There must be a better way

Vendor lock-in may be unavoidable at this point, but what companies need to do is understand up-front what the exit strategy will be, and build those costs into the initial cost analysis.

FORBES: Cloud Computing's Vendor Lock-In Problem: Why the Industry is Taking a Step Backward