Русско-англо-русский юридический словарь

A customs union is a type of trade bloc which is composed of a free trade area with a common external tariff. The participant countries set up common external trade policy, but in some cases they use different import quotas. (Wikipedia)

Bank is a professional participant of the securities market, a dealer in government bonds and a member of the MICEX-RTS Exchange. (jpmorgan.com)

A court cannot force you to answer questions that may incriminate you in regard to a criminal act. But say, for instance, you are regarded as a lesser participant in a criminal act, you may be called upon by the prosecution to give evidence - in which case the court may offer you indemnity from prosecution if you answer all questions truthfully, even if you do incriminate yourself." (Legal City)

Advertising revenue is extremely important to the Internet sector, though reliance on advertising revenue varies among industry participants. Certain Internet firms such as Amazon, eBay and Priceline operate online marketplaces and derive revenue from premium postings and commissions from sales on their respective platforms, reducing the importance of advertisements. (Investopedia)