经济学人下载:剑拔弩张:美国伊朗撕裂核协议(4)

1.nose to nose 面对面
Suddenly, the world's superpower and the newest great power are nose to nose.
突然间，世界超级大国和新兴强国兵刃相见。
2.be kept in check 抑制住某物
Life on Earth will become unsustainable unless population growth is held in check.
地球上的生命将无法延续，除非人口增长得到控制。