请翻译下:Have populations that are unstable been in response to

请翻译下:Have populations that are unstable been in response to I'd hate for that effort to have been in vain.翻译下~ 帮忙翻译一段英语~We are truly sorry that you have been unable to loc in response to in response to的 have been to与have been in have been in与 have been to 英语翻译the extent of differences between populations that are d 请赐译文：It would have been very helpful to have come to that re have been in have been to have gone to用法 英语翻译The initial populations in genetic programming are produ How long have you ___Beijing?选填been in/been to /gone to 请分别解