So it started as self-defense, but I think some operators, they realized very quickly that with piracy you can earn much more money than you can as a descent fisherman.

VOA: standard.2009.10.30

OK. One of the other things you're going to see is that some of the operators have odd meanings.

好，你们会学会的另外一件事情,是一些操作符,有很奇怪的含义。

麻省理工公开课 - 计算机科学及编程导论课程节选

In some cases,there was open war between labor activists and coal mine operators.

VOA: special.2009.09.07