This condition is called seasonal affective disorder, or SAD for short.这种病情叫做季节性情感失调症，或简称SAD。I'm sad about my toys getting burned in the fire.我的玩具在这场火中付之一炬，这令我很难过。He died five or six years ago I'm sad to say.很遗...
我们经常忘记该合理地使用我们的身体。We often neglect to make proper use of our bodies.他们已经非常合理地调整了饮食。They have very sensibly adjusted their diet.根据这项研究我们可以合理地推断出这种行为是遗传的.From this study we can reasonably infer that this behaviour is inher...
它们属于同一区域的报纸.They are neighbourhood paper.小分队的警察比那些负责大片区域的警察更了解自己管片的群众。The team police get to know the people in their patrol areas better than cops who must cover a larger beat.这就结束了我们对保护自然区域的评估.This concludes our survey...
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...