More than 20 subjects are on offer at AS level at our college.

本校提供20多门高级证书辅助考试学科。

More than 20 subjects are on offer at A2 level at our college.

本校提供20多门A2证书考试课程。

By manipulating the amount of money on offer in each situation, Cohen and his collaborators could watch this neural tug of war unfold.

通过操纵每种情况下提供的资金数量，科恩和他的合作者可以观察到这种神经拉锯战的展开。

He took all the freebies that were on offer.

他取了可得的全部免费品。

The food on offer was unfit for human consumption.

那些特价食品不适宜让人食用。