说明会的英文：
explanation session

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。

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。