曾炜表示，许多餐饮酒店都将餐厨废油的收购权承包给了专人，收购方和餐饮企业间建立比较稳定的购销关系，外人不得插足。

According to Zeng, many restaurants contract out their kitchen waste collection to private parties, a stable set-up in which there is no room for the entrance of an outside party.

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依靠各占三分之一的广播权出售收入、门票收入和商业广告营收，俱乐部近几年的收入持续稳定增长。

Revenues have grown steadily in recent years, with income from broadcasting, ticket sales and commercial sales each making up about one-third.

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他们发现，今天，一个相对稳定的高层次编辑群落正越来越“掌控”着该百科全书的控制权，而那些随机的贡献者与编辑正在逐渐走失。

Today, they discovered, a stable group of high-level editors has become increasingly responsible for controlling the encyclopedia, while casual contributors and editors are falling away.

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