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 that's impossible.Carol and Tom invited us to lunch.Look through the window.
但这是不可能的。卡罗尔和汤姆请我们来吃午饭。从窗子往里看看。