最佳条件

What's more, they also get involved in the calculation of the weightiness of FTAs.

英语礼貌原则以布朗和莱文森的面子理论为代表。

When drinking the soup, and hold the spoon with right hand, the spoon should face the outer side to ladle out the soup, and then put it into the mouth.

喝汤时，右手拿汤勺，勺口朝外舀，舀上后再送入口中，喝汤时不能发出任何声响。