fix review comments
fix review comments

May2016/galaxy,sdgdsffdsfff/galaxy,ontologyzsy/galaxy,imotai/galaxy,baidu/galaxy,sdgdsffdsfff/galaxy,imotai/galaxy,taotaowill/galaxy,WangCrystal/galaxy,Kai-Zhang/galaxy,bluebore/galaxy,WangCrystal/galaxy,baidu/galaxy,sdgdsffdsfff/galaxy,imotai/galaxy,szxw/galaxy,ontologyzsy/galaxy,bluebore/galaxy,bluebore/galaxy,ontologyzsy/galaxy,szxw/galaxy,Kai-Zhang/galaxy,taotaowill/galaxy,imotai/galaxy,ontologyzsy/galaxy,sdgdsffdsfff/galaxy,bluebore/galaxy,ontologyzsy/galaxy,szxw/galaxy,May2016/galaxy,Kai-Zhang/galaxy,baidu/galaxy,imotai/galaxy,sdgdsffdsfff/galaxy,bluebore/galaxy,szxw/galaxy,May2016/galaxy,szxw/galaxy,taotaowill/galaxy,WangCrystal/galaxy