大多是习语，已有专家编入辞典……至于地不地道，也要具体看用在什么场合
悉听尊便： As you wish
言之过早： You can never tell.
It's too early to (do)
not come close to (sth)
早知今日，何必当初： It's your own fault.
I should have (done)
If I had known (that...) , I would have (done)
秀色可餐： be a feast to the eye (usually said of a very attractive woman, sometimes of beautiful scenery)
先苦后甜： 1.No sweet without sweat.
2.Pleasure comes through toil
3. first take pain, and then enjoy pleasure
4.Business before pleasure. (先苦后甜／先办正事。)
雕虫小技： insignificant skill;
the trifling skill of a scribe;
literary skill of no high order
lesser talent
无功而返： end in vain
return with empty hands(我译的)
先发制人： gain the initiative by striking the first blow;
forestall the enemy
take preemptive measures(采取先发制人的手段 )
anticipate the enemy;
get the drop on sb.;
wipe sb.'s eye
大动干戈： make a big fuss
--The two nations went to war over a territorial dispute.
(两国为了领土问题大动干戈。)
如意算盘： wishful thinking
count one's chickens before they are hatched
(蛋尚未孵先数雏；过早乐观；打如意算盘)
[打如意算盘 indulge in wishful thinking
打乱了他的如意算盘 upset his smug calculations]
趾高气扬： high and mighty
consequential
(趾高气扬，目中无人 give oneself airs and look down one's nose at everybody )
走投无路： be driven from pillar to post
have no way out
at bay
(逼得走投无路 be driven (or pushed) to the wall
穷困潦倒，走投无路 be down-and-out and have no place to turn)
滔天大罪： [成语] a monstrous crime;
a heinous crime;
a towering crime
无价之宝： 1. Of inestimable value, extremely precious
2. priceless
3. invaluable
红颜知己： [成语] pretty young lady bosom friend
female intimate
晴天霹雳： a bolt from the blue
a thunder from the clear sky
(come as) a thunderbolt
再接再厉： work harder and harder
(他们百折不挠，再接再厉，终于达到了目的。 The goal has been finally attained through their dauntless and persistent efforts.)
束手无策： be at one’s wits end
over a barrel
at the end of one's rope
at the end of one's tether
以礼相待： treat sb. with courtesy