英语翻译谁能帮我翻译一下下面的汉语啊 Landes and Posner（1981）认为,市场势力一词是指单个或一组联合

Landes and Posner (1981) think,market power refers to a single or a combination of a firm to influence or control the ability to price,namely the firm to raise prices to competitive level,at the same time,prices will not bring most of the sales to rapid loss of ability to raise pricesunprofitable and must be cancelled.
Pindyck and Rubin (2002) also pointed out that the market power refers to improve the ability of price and limited production in an imperfectly competitive conditions.
It reflects the enterprise in the competition level (marginal cost) on theability to determine on their own favorable price,which makes thosefirms with market power could be price above market value price levelthus obtain excess profit.
Authoritative definition America judiciary on market forces is "controlprices or exclude competition power"; horizontal merger guidelines that"market power refers to the ability for a long period in product prices remain above the price in the competition".

Landes and Posner (1981), the term market power refers to a single or a group of manufacturers for the price of a joint influence or control ability, namely manufacturers to increase the price to perf...