a most favoured nation的用法和样例：
- This afternoon they are going to vote on the proposal of the most favoured nation treatment to that country.
- It also includes the most favoured nation treatment which enables Hong Kong ships to enjoy preferential port dues when calling on Ukrainian ports.
- In the WTO,improved market access granted to one member must be granted to all the members according to the most favoured nation(MFN)principle.
- Most favoured nation trading status
- one-sided most favoured nation clause