航空业的寡头垄断特性使得少数几家大公司控制了大部分市场份额。

The ___oligopolistic airline industry allows a few major companies to dominate most of the market share.

在寡头垄断市场中，几家公司经常设定相似价格以避免竞争。

In an ___oligopolistic market, a few companies often set similar prices to avoid competition.