I also think the scientists' conclusion is reasonable in part, for the world is not always all right for each of us, so some trouble, in another word, some stress, are of benefit to us as the bacterin to prevent from the disease.
I also think the scientists' conclusion is reasonable in part, for the world is not always all right for each of us, so some trouble, in another word, some stress, are of benefit to us as the bacterin to prevent from the disease.
我认为科学家们的结论有些合理,因为这世界对我们每个人来说不都总是顺利的,所以,一些烦恼,换句话说,一些压力,对我们是有好处的,就像疫苗预防疾病一样是有好处的.