let well alone meaning in English

不要画蛇添足

Then she got to talking about her husband , and about her relations up the river , and her relations down the river , and about how much better off they used to was , and how they didn t know but they d made a mistake coming to our town , instead of letting well alone - and so on and so on , till i was afeard i had made a mistake coming to her to find out what was going on in the town ; but by and by she dropped on to pap and the murder , and then i was pretty willing to let her clatter right along
接下来便讲他的丈夫，讲她沿河上游的亲戚，讲她下游的亲戚，讲她们过去的光景怎样比现在好得多，怎样自己对这一带并没有搞清楚，怎样打错了主意到了这个镇上来，放了好日子不知道过如此等等，说得没有个完。这样，我就担起心来，深怕这回找到她打听镇上的情况，也许这个主意是错了。不过，不一会儿，她提到了我爸爸以及那件杀人案，我就很乐意听她唠叨下去。