nut

do one's nut

(Brit. informal)be extremely angry or agitated

(英，非正式)大发雷霆

nuts and bolts

(informal)the basic practical details

(非正式)基本情况；具体细节

the nuts and bolts of public policy.

公共利益准则的具体细节。

off one's nut

(informal)out of one's mind; crazy

(非正式)发疯的，发狂的

a tough (或 hard) nut

(informal)someone who is difficult to deal with; a formidable person

(非正式)难以对付的人；可怕的人

a tough (或 hard) nut to crack

(informal)a difficult problem or an opponent hard to beat

(非正式)难以解决的问题；棘手的事情；劲敌

use (或 take) a sledgehammer to crack a nut

(informal)use disproportionately drastic measures to deal with a simple problem

(非正式)小题大做