Many banks are now offering interest-free overdrafts to students.现在很多银行都为学生提供免息透支服务。Banks are quick to demand their pound of flesh when overdrafts run a little over the limit.透支稍微超出限额时,银行便会很快要求归还欠款。Old out-of-date steel plants were kept ticking over by means of bank overdrafts.设备陈旧的钢铁厂靠银行透支维持着。