1. on the back of 紧接着；在……基础上
The advertising agency secured the contract on the back of its previous successful campaigns.
这家广告公司能拿下那份合约得益于此前成功的广告宣传活动CqP;gv3BOWD50Rbtvuc。

2. pledge to do sth. 做……的承诺
The EU could time such a pledge to grant aid to Portugal.
欧盟委员会将择机做出向葡萄牙提供经济援助的承诺[i]hZMop#BHD_。

3. saddled with 背负着
For recent graduates who are saddled with debt and struggling to buy a home, the last thing they would care about is pension planning.
对最近毕业的，为买房负债累累，心力交瘁的大学生来说，养老金是他们最后才会考虑的事情,QgU|SBv.X。

4. fulfill one's promise of 兑现承诺
The president fulfilled his promise of announcing a date for the referendum.
总统履行了他宣布公投日期的承诺9bpRwlYAkJB@。