For instance, there are some eco-extremists who think that it would be better for the planet, What happens when such people have mastered synthetic biology techniques that will be widespread by 2050?
例如，一些生态极端主义者认为 人类的数量越少， 对这颗星球， 对我们生活的地球越好。 当这样的人掌握了 那些将会在2050年可能被普遍推广的 合成生物技术后