1.如果賣方不能在信用證有效期內交貨的話，買方有權單方面取消合同。 The buyer has the right to cancel the contract unilaterally if the seller fails to ship the goods within the L/C validity.
　　
2.如果沒有什么正當理由，你們不應撕毀合同。 You cannot break the contract without any good reason.
　　
3.我們完全有理由取消合同，因為你們沒有完成應遵守的合同內容，履行合同。 We have every reason to cancel the contract because youve failed to fulfil your part of it.
　　
4.如果一方不履行合同，另一方有權取消合同。 One party is entitled to cancel the contract if the other side cannot execute it.
　　
5.一般來講，合同一經雙方簽訂就不得更改。 Generally speaking, a contract cannot be changed after it has been signed by both parties.
　　
6.由于這種難以預料的情況，合同中的有關條款不得不做些修改。 Some relative clauses in the contract have to be amended owing to the unexpected situation.
　　
7.這個合同將到期，我們來談談新合同的事宜吧。 Since the contract is about to expire, shall we discuss a new one?
　　
8.包裝直接關系到產品的銷售。 Packing has a close bearing on sales.

9.包裝有助于推銷產品。 Packing will help push the sales.
　　
10.買方通常很注意包裝。 Buyers always pay great attention to packing.