bilateral exchange contract的用法和样例：
- Bilateral exchanges should be first based on ethics.
- When the legal formality have been settled,the buyer and seller of a house can exchange contract.
- Nonetheless, there has been some movement, with a summit meeting between the US and China in New York and a bilateral exchange of ideas with some hints of fresh flexibility on the occasion of the APEC meeting in Osaka in December 1995.
- When the legal formality have be settled, the buyer and seller of a house can exchange contract.
- Forward cover The arrangement of a forward foreign exchange contract to protect a buyer or seller of foreign currency from unexpected fluctuations in the exchange rate.