As it has several times in the past, OPEC is now calling on other big exporters outside the cartel to help curtail supply to stem the crash in prices.

• 如以前曾经发生的几次一样，欧佩克目前正呼吁非欧佩克石油出口大国帮助降低供应量，以便遏制油价的暴跌。