The buyer has the right to cancel the contract unilaterally if the seller fails to ship the goods within the L/C validity.
如果卖方不能在信用证有效期内交货的话,买方有权单方面取消合同。
In the evenings he studied hard for his exams, and most mornings he took tourists around Oxford.
他晚间努力学习,以应付考试,而大多数早上,他则带领游客在牛津大学参观。