G7 leaders meeting in Japan warned that Brexit could harm the world economy and promised “more forceful” (but unspecified) measures to boost growth. Barack Obama laid a wreath at Hiroshima and decried nuclear weapons, without apologizing for America’s bombing of the city in 1945. Earlier in the week the president visited Vietnam, and announced an end to America’s arms embargo.
Forceful: 有力的
Unspecified:未明确的
Wreath:花圈
Decry:谴责
Arms embargo:武器禁运