选些个头小、表皮光滑的土豆做色拉。

Choose small waxy potatoes for the salad.

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选桃子时要挑表皮光滑、无伤或无瑕疵的来保证新鲜度。

Choose peaches with smooth skin, and without cuts or bruises to ensure freshness.

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行家建议：买姜不能光看外表，颜色鲜黄，表皮光滑的大部分为用硫磺熏制过。

Expert recommendations: Buy Ginger can not only appearance, color, bright-yellow, smooth skin smoked too much for the use of sulfur.

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