unskillful

形容词 unskillful:

1. poorly done
   同义词：botchy, butcherly

1. The machine was rendered useless by unskillful handling.
   由于操作不熟练，机器给弄得没有用了。
2. The answer of some problems is unskillful.
   一些问题的回答是不熟练的。