2019-09-30 [016-020]

[016] rehash

1. hash out (something) or hash (something) out
   or hash over (something) or hash (something) over : to talk about (something)谈起；聊起
   Hash： 一种加密算法
2. to talk about or discuss (something) again再次谈论；再次讨论
3. They've spent quite a bit of time hashing over/out the problem of Hash.他们花了相当多的时间讨论那个哈希问题。

rehash

[017] defensive

1. fend 拳头（向外出击）引申为初级保护好自己，to do things without help, to do basic activities by yourself自力更生；照料自己 - They had to fend for themselves while their mother was away.妈妈不在时，他们只得自己照顾自己。
   defensive，de - 解除，放下，离开，即为不出拳，表示保护，防御
2. always used before a noun : defending or protecting someone or something from attack : helping to keep a person or thing safe防御的；保护的；保卫的
3. This is the defensive boxing class.

defensive

[018] specious

1. speci = look / kind
   special a 特别的,专门的( speci种类+al=[属于]种类的=特别的)
   species n 种类,物种
   specific a 具体的(speci+fic带来=带来外观的=具体的)
2. : falsely appearing to be fair, just, or right : appearing to be true but actually false似是而非的；貌似正确的
   = false, artificial, forged, fabricate
3. The special pattern of the eye on butterfly Wings is specious. 特别的“类眼”花纹是假的

specious

[019] ingenuous

inveterate