那些由于灼伤或是过度使用双手而导致指纹磨损的人常常感觉表皮光滑的指尖要抓紧任何东西几乎不太可能。
People whose fingerprints have worn off because of burns or overuse often find that the smooth calluses that develop on the fingertips make it nearly impossible to maintain a grip on anything.
选些个头小、表皮光滑的土豆做色拉。
油桃：一种很像普通桃子的水果，表皮很光滑。
Nectarine: a type of fruit like a peach that has a smooth skin.
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