And they weren't as affected by masking chemicals like DEET.

这些驱蚊剂不会受到避蚊剂胺等掩饰化学物质的影响。

So they are not as affected directly by a cut-off from Russia.

因此， 他们不会受到来自俄罗斯的切断的直接影响。

That this general order of distribution depends on climate as affected by height above the sea, is seen at once, but there are other harmonies that become manifest only after observation and study.

这种分布的一般顺序取决于受海拔高度影响的气候，这一点立即可见，但还有其他和谐只有在观察和研究后才能显现出来。