Although不能和But连用,但是为什么有些网站翻译确是连用了呢

我用了好几个网站翻译"虽然他有七十岁了,但是他看上去很强壮"都是Although he is 70 years old, but he looks very strong

though 和although 为什么不能和but连用啊 but和although的区别． Although不能和But连用,但是为什么有些网站翻译确是连用了呢 although 和but能不能在不同句中连用 although和though哪个不能放开头? 用although或but改写句子 although 和 though "Although this beautiful things, but no value!"是什么意思? although although 和 though的区别