My heart to-day smiles at its past night of tears like a wet tree glistening in the sun after the rain is over.

我今天的心对它流泪的昨夜微笑，好像一棵湿的树在鱼后对太阳发出光辉。

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The sky was adorned with rain clouds. The eucalyptus tree in the garden swayed with joy and the air was filled with the sweet smell of wet mud.

天空乌云密布，花园里的桉树欢快地摇曳着，空气中弥漫着甜甜的湿土的气味。

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If the area is too wet, harmful organisms have a better chance to invade the tree and cause disease.

如果该区域过分潮湿，有害的微生物更有可能入侵树木，造成疾病。

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Professor Cook says the tree-ring records show periods of wet and dry weather.

VOA: special.2010.05.25

According to Professor Win Vandebergh and his colleagues at the University of Brussels, the cytoskeletal proteins that evolved to help the tree frog Hyla cinera cling to wet surfaces in its niche environment also passed down to mammals and eventually to us.

FORBES: Of Tree Frog Toe Pads And Human Hair: Our Latest Evolutionary Link

When humans blossomed from the evolutionary tree, it seems there was a cold wet nose and a wagging tail waiting for us.

CNN: Quest for man's best friend