not much of a hand at

• 不善于 ...
• 对(某事)不熟练； 不内行

not much of a hand at的用法和样例：

例句

1. Lao Li is not much of a teacher.
   老李不善于教书。
2. As humans you have not been so good about trusting yourselves.
   因为作为人类，你从不善于信任自己。

1. Subtlety has never been one of Margaret's talents.
   玛格丽特向来对处理具体小问题不内行。