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。
Whether in winter or summer, spring or autumn, it's always got its fun and its excitements.
无论在哪个季节，它总有自己的的乐趣和兴奋。
It's always worth learning the pros and cons of working for an agency and freelancing, because each has its perks! Here are a few that spring to mind.
了解设计公司和自由职业各自的优缺点总是有价值的，因为特有特点。以下是我想到的。
Unlike a standard lever handle or gear operator which will remain in the last position, our assemblies ensure that the handle will always spring return to its original starting position.
与仍然留在最终位置的调节杆手柄或传动装置不同，我们的组装可以保证手柄一直自复至原始的位置。
Unlike a standard lever handle or gear operator which will remain in the last position, our assemblies ensure that the handle will always spring return to its original starting position.
与仍然留在最终位置的调节杆手柄或传动装置不同，我们的组装可以保证手柄一直自复至原始的位置。
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