环发大会首脑会议的英文：
Summit Session of UNCED
n. 最高点；顶点；山顶；峰会，最高级会议；最高阶层
God is above the summit of heaven.
上帝是天堂的最高阶层。
Finally we gained the summit of the mountain.
我们终于到达了山顶。
From the summit there is a superb panorama of the Alps.
从峰巅俯瞰,阿尔卑斯山壮丽的景色尽收眼底.
n. 一场；开庭期；学年；聚会
There is no user session key for the specified logon session.
没有指定登录会话的用户会话密钥。
$_SESSION contains HTTP variables registered by the session module
包含着所有session模块注册的HTTP变量
It was a very good training session.
这是一场很好的热身赛。
[俚]=unconscious
Working Group on follow-up to UNCED including capacity - building
环发会议后续行动包括建立能力工作组