Wear dark gray or navy pants and suits.

可以是深灰色或深蓝色的裤子和上衣。

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Wear dark colors such as navy blue.

穿深色衣服，例如深蓝色。

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Meanwhile. navy convoy is necessary for building dark blue navy.

同时，海军护航也凸显了我国建设深蓝海军的必要性。

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Meanwhile. navy convoy is necessary for building dark blue navy.

同时，海军护航也凸显了我国建设深蓝海军的必要性。

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