We need to reach some sort of guarantee that these benefits can be guaranteed for Iran.

我们需要获得保证，保证伊朗可以从中受益。

So while these diets may be alluring early on, they don't guarantee long-term benefits for your health and weight.

因此， 尽管这些饮食在早期可能很诱人，但它们并不能保证对您的健康和体重有长期益处。

They are not paid in wages, though many of them get scholarships, they are not guaranteed medical benefits for injuries, though they have a choice about whether to play.

他们其中很多人都有奖学金，但并不领取工资，因此受伤后得不到医疗保险，尽管他们可以自己选择是否比赛。