No one can tell for sure ( ) ( ) smile ( ) ( ) (对.的影响) one's health.
问题描述:
No one can tell for sure ( ) ( ) smile ( ) ( ) (对.的影响) one's health.
答
whateffecthas to请翻译一下,谢谢没有人能确切地说出微笑对健康有什么影响。