6) But it has also brought along with it the negative effect/disadvantage /weakness that...
7) However， it is not without limits/problems/faults/defects， for example， ...
8) Like anything else， it also has its own dark side， as evidenced in...
9) For/Despite/In spite of the advantages/benefits/positive effects A has， it has suffered from/posed some disadvantages/harm/negative effects.
10) To attain this goal， however， we still have much work to do/many obstacles to remove.
