then again idiom (also there again)
C2 （用于表达与先前说法不同或相反的想法）话说回来，另一方面，然而
used when you have had a new thought that is different from or the opposite of what you have just said
I like to travel but, then again, I'm very fond of my home. 我喜欢旅游，可是另一方面我也很喜欢家里。