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。
It was from the study of these that so much was learnt about the interior of the earth.
正是从这两种波的研究中,我们可以了解到地球内部的许多情况。