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。
but when she got out at her own floor, both were forgotten in her sudden discovery that her front door was open.
但她到自己的楼层走出电梯后,就把这两件事忘了个干净,因为她突然发现她家的大门开着。