练习材料：
[Day 1798 2019-08-29]
Lesson 37-3 The process of ageing 衰老过程
We are so familiar with the fact that man ages, that people have for years assumed
that the process of losing vigour with time, of becoming more likely to die the older we
get, was something self-evident, like the cooling of a hot kettle or the wearing-out of a
pair of shoes. They have also assumed that all animals, and probably other organisms
such as trees, or even the universe itself, must in the nature of things ‘wear out’. Most
animals we commonly observe do in fact age as we do, if given the chance to live long
enough; and mechanical systems like a wound watch, or the sun, do in fact run out of
energy in accordance with the second law of thermodynamics (whether the whole
universe does so is a moot point at present).
任务配置：L0+L1+L4
知识笔记：
self-evident adj. 显而易见的; 不言而喻的; 明摆着的;
organisms n. 有机体; 生物; (尤指) 微生物; 有机组织; 有机体系;
in accordance with [词典] 符合；依照；和…一致;
the second law of thermodynamics 网络 热力学第二定律; 熱力學第二定律; 热二律;
a moot point 网络 争论未决的问题; 争论不休;
moot adj. (因不大可能发生而) 无考虑意义的; v. 提出…供讨论; n. 大会; 辩论会; 假设案件;
练习感悟：
