直到环境恶化威胁人类健康的时候，人们才意识到自己对环境造成的伤害 It's not until environmental worsening threaten human beings' health that people realize the harm of the surroundings.
直到环境恶化威胁人类健康的时候，人们才意识到自己对环境造成的伤害 it is not until the time when environmental deterioration begins to pose a threat to our health that we come to realize the damage we have done to the environment.
有人吗
就是翻译不出如何是好
