Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of lif...
1.Sleep is part of a person's daily activity cycle. 睡眠是每个人都要循环往复进行的一项日常生理过程。 2.There are several different stages of sleep, and they too occur in cycles. ...
刚刚尝试翻译了一篇文章,因为毕竟不是学翻译的,所以....呵呵,有不妥之处还请各位拍砖。在探讨之中共同提高。 我的翻译: Cells and Temperature 细胞和温度 1.Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. 细胞在某一限定温度范围之外是无法继续生存的,而且要想保持细胞有效的机能运作这一温度范围会更加狭小。 2. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37C;a departure of a few degrees from this value seriously impairs their functioning. 哺乳动物与鸟类体内的酶只有在37度的时候才能达到最高的催化效率;(即便)温度稍有偏差也会严重破坏其(催化)机能。