It's like you're hiding something.

你好像隐瞒了什么。
A: You never let me see your e-mail .It's like you're hiding something.
你从来不让我看你的电子邮件。你好像隐瞒了什么。
B: My e-mail messages are my own private business.
我的邮件是我的私生活。

Just like that.

就那样。
A: Did you have a long interview?
面试时间长吗？
B: No, it was over, just like that.
不，就那么结束了。