translation.en: The climate agreement -- a binding climate agreement -- is needed because of the scientific evidence that we're on a trajectory for about a four-degree world and we have to change course to stay below two degrees.
translation.zh: 而气候协议-- 是对各国有约束力的协议-- 这是非常有必要的， 因为有科学证据表明， 我们的全球变暖正接近4摄氏度， 而我们必须将其控制在2度以内。