The U. S. has been trying to start discussions, instead, on what can be done after 2020.

美国一直在设法开始讨论在2020年之后可以做些什么。

youdao

That material can be used to start community discussions, she said.

这种材料能够用来开始社区内部的讨论，她说。

youdao

That material can be used to start community discussions, she said.

这种材料能够用来开始社区内部的讨论，她说。

youdao