1.oligopoly n. 寡占;寡头买主垄断
The petrol market is an oligopoly.
汽油市场被垄断 。
2.lax n. 松元音;泻肚 adj. 松的;松懈的;腹泻的
One of the problem areas is lax security for airport personnel.
其中一个问题是对机场人员的安全措施不严格 。
3.regime n. 政权,政体;社会制度;管理体制
The authorities moved him to the less rigid regime of an open prison.
当局把他移送到管理相对宽松的不设防监狱 。