关关难过用英语怎么说

"关关难过" is a line from a famous Chinese poem called "Guānguān Nán Guò" (关关难过) written by the poet Liu Yuxi (刘禹锡) during the Tang Dynasty (618-907). The full poem is as follows:
关关雎鸠，在河之洲。
窈窕淑女，君子好逑。
参差荇菜，左右流之。
窈窕淑女，寤寐求之。
求之不得，寤寐思服。
悠哉悠哉，辗转反侧。
参差荇菜，左右采之。
窈窕淑女，琴瑟友之。
参差荇菜，左右芼之。
窈窕淑女，钟鼓乐之。
The poem describes a beautiful and virtuous woman who is difficult to attain, much like the bird that is hard to catch on the small island in the river. The line "关关难过" refers to the difficulty of catching the bird on the small island.
In English, "关关难过" can be translated as "it is difficult to catch the bird on the small island."
Here are some example sentences using this phrase in English:
"I've been trying to catch that elusive bird on the small island for hours, but it seems like a lost cause. 关关难过."
"The bird on the small island is so difficult to catch, I'm starting to think it's a mythical creature. 关关难过."
"I've tried every trick in the book to catch the bird on the small island, but it always seems to evade me. 关关难过."