Age of catalyst

age [edʒ]

n. 年龄;时代;老年;年龄段; vt.& vi. （使）长大;使显老;使变老;使苍老; vi. [化学]老化;陈化，熟化;（吸毒者随年龄增长而主动）戒毒，戒除毒品; vt. [化学]使老化;使陈化;使熟化;估计，推测（马的年龄）;

of [əv]

prep. 关于;属于…的;由…制成; aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];

catalyst ['kætəlɪst]

n. <化>触媒，催化剂;〈比喻〉触发因素;促进因素;〈口〉有感染力的人;

cata向下+lyst裂开，分解→分解下去→催化[剂]

I'd like to set up a doctor's appointment as soon as possible.

我想尽快预约门诊。

I want to reserve a seat from los angeles to tokyo.

我要预订一张从洛杉矶到东京的机票。

The only way that they can preserve their history is to recount it as sagas -- legends handed down from one generation of another.These legends are useful because they can tell us something about migrations of people who lived long ago, but none could wri

他们保存历史的唯一办法是将历史当作传说讲述，由讲述人一代接一代地将史实描述为传奇故事口传下来。