“虽然但是”的英语翻译是"although"，它来自拉丁语"althō"，意为"尽管"。

例句：

1. Although it rained heavily, we still went to the park. 虽然下雨很大，但我们还是去了公园。

2. Although he is very rich, he is not happy. 虽然他很有钱，但他并不快乐。

3. Although she is young, she is very mature. 虽然她年轻，但她非常成熟。