This harbor is a natural harbor.

这个港口是天然港。

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It has an excellent natural harbor.

是优良的天然港湾。

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It is a natural harbor.

这是个天然港。

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It has a deep natural harbor and is an important shipping center.

该市有一个天然深港，是重要的航运中心。

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It has a deep natural harbor and is an important shipping center.

该市有一个天然深港，是重要的航运中心。

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