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。
I want to go shopping. Can you come with me, please? You can help me carry the things.
我想去商店买东西,你能和我一起去吗?你可以帮我拿点东西。