“bone to pick”别理解成“挑骨头”，真实含义是对...有意见；向...抱怨；争端；不满。

【例句】
I've got a bone to pick with you - you've been using my shaver again.
我对你有意见——你又在用我的剃须刀了。

One of my staff had a bone to pick with me concerning my policy.
我的一位部属，对我的政策提不同意见。