伊朗当地时间周一宣布，它已开始将浓缩铀丰度提高至远超2015年核协议规定的上限。另有消息报道，伊朗海军扣押了一艘韩国油轮。事件对西方造成双重挑战，中东紧张局势再度升级。请看本报昨日的报道：

Iran began enriching uranium Monday to levels unseen since its 2015 nuclear deal with world powers and also seized a South Korean-flagged tanker MT Hankuk Chemi near the crucial Strait of Hormuz, a double-barreled challenge to the West that further raised Mideast tensions.

Both decisions appeared aimed at increasing Tehran’s leverage in the waning days in office for U.S. President Donald Trump, whose unilateral withdrawal from the atomic accord in 2018 began a series of escalating incidents.

报道中的double-barreled本意指“（武器）双筒

的”，引申为“双重的”。例如：

This is a double-barreled attack on my character.

这是对我人格的双重攻击。