Fast neutron fission factor

fast [fæst]

adj. 快的;走得快;感光快的;紧的; adv. （比准确的时间或宣布的时间）快;迅速地;紧紧地;彻底地; vi. 禁食，（尤指）斋戒; n. 禁食期，斋戒期;断食，节食;

neutron ['nʊtrɑn]

n. [物]中子;

neutr中间的+on表名词,...子 →中子

fission ['fɪʃən]

n. <物>（原子的）分裂，裂变;<生>分裂生殖;

fiss-, fissur =split (分裂)

factor ['fæktə]

n. 因素;<数>因子;代理人; vt. 把…因素包括进去;[数学]分解…的因子，将…分解成因子;以代理商（或管家等）的身份行事，做代理商（或管家）; vi. 做代理商（或管家）;

Nonsense.

胡扯

At noon I had lunch with a friend of mine.

在中午我与一个朋友一起吃了午餐。

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。