Players could sign with any team once their contract expired, as sports economist Andrew Zimbalist explains.

VOA: special.2010.07.26

And so if you sign a contract with the government for millions of dollars, you have guarantee to get your dollars back, plus whatever profits they allowed in the contract.

所有如果你和政府签订了合约,做了一个百万的大单子，你能保证拿到钱，和其他的利润,在合同里规定的利润。

斯坦福公开课 - 经济学课程节选

"But,it is this television that does not want to sign a contract with the Union and does not want to pay royalties.

VOA: standard.2009.08.27

The court has also ordered Walfadjri to sign a "general representation" contract with the Office for Artists' Royalties.

VOA: standard.2009.08.27