摘要
1．associate联想，使发生联系。2．catalyst催化剂，刺激因素。3．turn the corners of your mouth upwards扬起嘴角。4．scientifically backed有科学依据的。5．posit假定，设想。6．validate验证，证实。7．assertion断定，主张。
We often tend to associate1smiling as the result of a positive event or mood.But research demonstrates that the act of smiling,in and of itself,can be the catalyst2for joy.Wonderful things,ranging from an improved mood to a better relationship,can be the result of the simple act of smiling.Even better,it is a tool that is free,easy and always available.
出处
《大学英语》
2015年第4期22-23,共2页
College English
