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。
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。
3. saddled with 背负着
For recent graduates who ar
e 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。
4. 
