Thus our bodies continuously exchange old substance for new, just like a spring which more or less maintains its form and movement, but in which the water molecules are always different.

因此，我们的身体不断地把旧物质替换成新的，就像一个喷泉，或多或少地保持着它的形式和运动，但其中的水分子总是不同的。

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This is a rudimentary form of dependency injection, as more fully expressed in frameworks like Spring.

这是依赖项注入的基本形式，更完整的形式以Spring这样的框架表示。

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Spring Roo core components: To enable add-on development, Spring Roo provides a set of core components that form a hosted execution environment for different add-ons.

Spring Roo核心组件：为了实现附加组件的开发，Spring Roo提供了一组核心组件，这些组件构成了不同附加组件的托管执行环境。

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Personally, I think Federer and Nadal are more likely champions, while Hewitt has the form and pedigree to spring a surprise, but Andy could do it and I have every confidence in him.

BBC: Andy Murray knows he can win Wimbledon - Tim Henman

The provisional temperature for this spring goes against recent form for the season, forecasters said, with eight of the past 10 years seeing warmer than average springs compared to the long-term (1981-2010) average of 7.7C.

BBC: Spring will be coldest in 50 years, Met Office says

The idea of storing energy from a spring in an intermediate electrical form was taken a stage further in Freeplay's clockwork torch.

ECONOMIST: MONITOR