新换的零件费要30美金，人工另加。

The spare parts cost 30 dollars, plus Labour.

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保修期过了以后，我们只收取零件费。

After the expiration of the guarantee, we charge for the replacement parts only.

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一些分析家称中国对苏- 27和苏- 30战斗机并不是完全满意，对这些军备的保养和供应零件(从俄罗斯)都要费些周折。

Some analysts say the Chinese have not been entirely pleased with their Su-27 and Su-30 fighters. Keeping them maintained and supplied with spare parts (from Russia) has not been easy.

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