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。
and another group were disturbed for an equal period of time but when they were no exhibiting eye-movements,
另一组人也是连续几夜被叫醒,但是在眼球队没活动时被叫醒的。