going too far is as bad as not going far enough; beyond is as wrong as falling short; too much is as bad as too little  过犹不及

a face as long as a fiddle  阴郁的脸色

a letter sent as thanks for being treated well as someone’s guest  作战管理语言

A miss is as good as a mile  差之毫厘，失之千里

a problem as old as the world itself  世界性古老问题

as bald as a coot  头发脱光的

as best as one can  尽最大努力

as big as life  海事卫星系统; 与原物一样大

as black as one’s hat  谐波集(HS); 墨黑的

as blind as a bat  有眼无珠

as blind as an owl  瞎透了

as bold as brass  厚颜无耻的

as born as known  生而知之

as broad as long  长宽相等的

as busy as a bee  极忙碌

as cheap as dirt  极便宜的

as clean as a whistle  光滑

as clear as a bell  健全的

as clear as day  一清二楚的

as cool as a cucumber  极为冷静的