fix by wuyi's comments
fix by wuyi's comments

Yancey1989/cloud,PaddlePaddle/cloud,Yancey1989/cloud,Yancey1989/cloud,Yancey1989/cloud,gongweibao/cloud,PaddlePaddle/cloud,PaddlePaddle/cloud,PaddlePaddle/cloud,gongweibao/cloud,gongweibao/cloud,PaddlePaddle/cloud,gongweibao/cloud,gongweibao/cloud,Yancey1989/cloud