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。
Don't worry! We won't leave before nine. We'll wait for you outside the school gate!
别担心!9:00前我们不会出发。我们将在学校的大门外等你!