semi-formal造句

1、Local fairs serve as places for sows to trade and boars to compete in semi-formal personal combat.
当地集市是母猪做买卖的地方，公猪则在此进行半正式的单人搏击赛。

2、However, UML is at last a semi-formal language, so it's difficult to maintain model consistency.
然而由于UML归根结底是一种非形式化的语言，模型的一致性很难保证。

3、Certainly. Mr. Jones, would you like that casual or semi-formal attire?
好的。琼斯先生，服装是随便点还是半正式呢？