现在（大家）想象一棵布满了密密麻麻的小针叶的松树。

Now imagine a pine tree with all those little densely packed needles.

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这是在针叶林中蜿蜒的小路。

This one is just a meandering in the woods path.

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大多数针叶树木材中都含有松脂。

Most conifers wood in contain turpentine.

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这条路上铺满了冷杉针叶。

The road was covered with fir needles.

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也许罪魁祸首是针叶树。

Maybe conifers were to blame.

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针叶萎凋病就是一例。

One example is the needle blight.

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在森林中，潮湿的树木与针叶会使讯号变弱。

In a forest, wet wood and needles attenuate the signals.

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什么是针叶树？

What is a conifer?

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拖到绘图页上，然后右击，使之成为针叶树或落叶树。

Drag onto the page, then right - click to make coniferous or deciduous.

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拖到绘图页上，然后右击，使之成为针叶树或落叶树。

Drag onto the page, then right - click to make coniferous or deciduous.

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