Life is but a span, we should leam to do subtraction.

人生苦短，我们要学会做减法。

But what mind is there among men that could even record, let alone direct, the constant changes in molecules that transpire in the life span of a tree?

但是如果真能记录下来的话，那么以个人的意志又是怎样的呢，仅仅只是跟随着它的指挥，分子学恒定不变的变化便泄露出了一棵树的生命源泉？

A bloom may last several weeks, but the life span of any individual phytoplankton is rarely more than a few days.

水华可能会持续数周，但任何单个浮游植物的寿命很少会超过数天。

And by the time he discovers that the morsel is not of the genus stone, but a digestible bonbon, half his allotted span of life is over.

等到他发现这口食物不是一块石头，而是可以消化的糖果时，他的大半生已过去了。

From the human being's age and life span to research history is an influential perspective, but is neglected for a long time.

从人的年龄与寿命去关照历史是一个颇有意义的视角，但长期以来却被人们所忽视。

It is known to all that women live longer than men generally, because men are under much pressure than women, but a research found that character also had influence on life span.

众所周知，女性通常比男性长寿，因为男人比女人压力更大，但研究发现，性格也影响寿命。