如果适当，甚至可以根据新的经验或过程变更来改变它们。

It's even acceptable to alter them, if appropriate, based upon new learnings or course changes.

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也就是说，如果适当的先决条件成立，可以使用可选功能部件来创建层结构。

In other words, attempt to use optional features as way of creating layers that would be available if the appropriate prerequisites are present.

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海拔最低的一些岛屿如果适当泛滥的话，还可以为胡瓜鱼、鲑鱼和其他本地物种提供栖息地和食物。

Some of the lowest islands could be allowed to flood, providing habitat and food for smelt, salmon, and other native species.

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If we get the pressure in there just right, we will allow for gas electron collisions and then we get the glow that ultimately was sent through the slits.

如果我们把气压设置在一个适当程度，把气体电子碰撞也算在里面,我们得到的炽热,最终将通过裂缝传送。

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if they can find a way to let the employee go at a certain age.

如果公司能有办法让员工在适当年龄退休是最符合公司利益的。

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And when that becomes relevant in a problem set, we'll point you at the appropriate documentation.

在习题集中如果你们遇到相关的问题，我们会提供适当的文档资料。

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