【每日听力 • 真题系列】
And this will involve a huge 1 to low-carbon energy systems. And the transition is a 2 priority. And for this to happen, we may need action 3 . From a political 4 , we need to understand the terms on which major countries like China and the USA might 5 to a global agreement, because at the moment we don't have that 6 .
【出处:2016年12月六级听力第一套,对话1】