We are happy to donate to bona fide charitable causes.我们很乐意为真正的慈善事业捐献财物。a bona fide reason真正原因There are few bona fide readers but many dippers.真诚精读的人很少,但粗读者却很多....
Mankind's knowledge of the universe has increased beyond measure.人类对于宇宙的了解已经大为增加。His research is for the betterment of mankind.他的研究是为全人类造福。the history of mankind人类的历史...