从那时起，几个地球首脑会议已经举行了很大的进展，并已经取得进展。

Since then, several Earth Summits have been held and much progress has been made.

youdao

从那时起，几个地球首脑会议已经举行了很大的进展，并已经取得进展。

Since then, several Earth Summits have been held and much progress has been made.

youdao