良机的英文：
good chance

Make hay while the sun shines
把握良机

It was a rare opportunity to rub shoulders with the rich and famous.
这是个与富翁名人来往的良机。

It's a day after the fair
错过良机,为时已晚

Everything has its time and that time must be watched.
切莫错过良机。

express,feel regret at/about a missed opportunity
对错过良机表示、感到懊悔

The sales offer you the Best chance to do shopping, the more you Buy, the more you save.
大拍卖是购物良机，买得越多，节省越多。

An optimist see an opportunity in every calamity,a pessimist see a calamity in every opportunity.
乐观者从灾难中看到良机，悲观者从良机中看到灾难。

How doth the little busy bee / Improve each shining hour.
小小蜜蜂多忙碌/利用良机不放松。

Jim seized on the possibility of winning the race now that two of the best runners were no longer taking part.
两名优秀的赛跑选手不再参加比赛,杰姆抓住这次获胜的良机。

We afford you the opportunity to dine with delight, to sip in style, to relax in comfort.
我们将竭诚为您提供愉快进餐的良机，优雅的啜饮，舒适的休憩。

A good appetite is a good sauce
饥不择食

The prompt goods have good qualities.
当场付款的物品质量不错。

Be not simply good; be good for something.
不要单纯做个好人，还要做个能派上用场的人。

Have a good mind
很想…

Good gracious, no!
天哪，不！

I advise you to take the chance.
我建议你抓住机会。

outside chance; remote possibility.
不大可能的机会；极小的可能性。

I'll afford you a chance.
我将给你提供一个机会。

A lost chance never returns.
错过的机会永不再来。

Why not take a chance on it?
为什么不冒险一试呢？