说明会的英文：
explanation session

explanation是什么意思：
n. 说明，解释；辩解

My impression is that they are satisfied with you explanation .
我的印象是,他们对你的解释很满意。

Your explanation is as clear as mud.
你的解释一点都不清晰

explanation of tag notation
标记表示法的说明

A purposefully misleading interpretation or explanation.
曲解故意误解、曲解

The explanation in this dictionary is concise and to the point.
这部词典里的释义简明扼要。

session是什么意思：
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。

The court was not in session yesterday.
法庭昨天未开庭。

The next session came.
下一届会期到来了。