"似苦是甜"的英文表达是 "Bittersweet", 它来源于两个单词 "bitter" 和 "sweet" 的结合。"Bitter" 指的是带有苦味的，而 "sweet" 指的是带有甜味的。因此，"bittersweet" 形容的是有苦有甜的事物或感觉。
例句：
The bittersweet memories of my childhood always bring a smile to my face. (我童年的似苦是甜的回忆总能让我微笑。)
It was a bittersweet moment when she graduated from college and had to say goodbye to her friends. (当她从大学毕业并不得不和朋友说再见时，那是一个似苦是甜的时刻。)
The victory was bittersweet because we had to work so hard to achieve it. (胜利是似苦是甜的，因为我们必须非常努力才能取得它。)