ten·der·foot /ˈtɛndɚ/
  新手,生手,無經驗者
  Ten·der·foot n.
  1. A delicate person; one not inured to the hardship and rudeness of pioneer life. [Slang, Western U. S.]
  2. See Boy scout.
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  tenderfoot
       n : an inexperienced person (especially someone inexperienced in
           outdoor living)
       [also: tenderfeet (pl)]