Now he may have overstepped the mark or having done such a good job promoting the plight of Tibet that he is now no longer as effective as he was or at all.

• 现在，他或许有一些超越自己的界线了，或者是已经在改善西藏的境况上取得了丰硕的成果，以至于他现在已经无法像原来那样或者一点都不能发挥其影响力了。