再往上走，天气就变了——低云笼罩着被厚厚的草覆盖的山腰。

Further up, the weather changes—low clouds envelop the mountainsides, which are covered with thick grass.

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又细又长的草覆盖着整个地区。

The reedy grass covered the whole area.

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清晨，草上覆盖着一层白霜。

The grass was covered with frost in the early morning.

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