let-alone

You can avoid all kinds of trouble by letting well alone.

随遇而安就能避免种种麻烦。

Arguments between other couples should be let well alone.

人家夫妻之间吵架，最好不要去管。

His cabin is uninhabitable in summer,let alone in winter.

他小屋连夏天都不好住,更不用说在冬天住了。

Ikonic art can be found throughout the Orthodox Christian faith to represent the messiah, saints and other holy figures, but it is an exacting art that few men master, let alone dabble in.

圣艺术是东正教用于赛亚、圣徒象和圣经宗教艺术式，其笔触细腻精美绝伦，但极少有人能达到深厚造诣，更遑论成为杰出大师。

I'm so sick today that I couldn't walk as far as the kitchen, let alone go to the zoo with you.

我今天病得连厨房那么远都走不动, 更不用说陪你逛动物园了。