But taking a cue from health experts, a group of 19 restaurant companies are pledging to offer more-healthful menu options for children at a time when concern is growing over the role of fast food in childhood obesity(肥胖症).
出自-2012年12月听力原文
英语六级真题
Maple Hill signs a contract pledging to buy the farmer's milk at a guaranteed base price, plus quality premiums and incentives for higher protein, butter fat and other solids.
2019年12月六级真题（第三套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-COUNT
保证；诺言；誓言
When someone makes a pledge, they make a serious promise that they will do something.
If you pledge a sum of money to an organization or activity, you promise to pay that amount of money to it at a particular time or over a particular period.
If you pledge yourself to something, you commit yourself to following a particular course of action or to supporting a particular person, group, or idea.
If you pledge something such as a valuable possession or a sum of money, you leave it with someone as a guarantee that you will repay money that you have borrowed.