1.And it was definitely, I mean there was, it was not a casual endeavor.

这绝对是，我是说，这是很随便的努力。

2.Include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner.

包括一些很随便的、看上是即兴的话，你可以 用轻松的、做作的把它们说出来。

3.This is not a very casual way to ask a question, no, it does sound more polite, so keep that in mind.

这是一个很随便的提问，，这听起来更礼貌，所以要记住这一点。

4.Look, I'm just saying, um... Penny is one of our many neighbors, you know, and in our building, neighbors come and go, it's very casual, no dress code.

我的意思是佩妮是我们众多邻居中的一位，在我们这幢楼里，邻居们进进出出很随便的，讲究穿着。