turbulence;upheaval;unrest 世界在～中前進(jìn)。The world advances amidst turbulence./當(dāng)前的國(guó)際局勢(shì)依然緊張～。The present international situation remains tense and turbulent./～的局勢(shì)a turbulent(or volatile)situation/～多變的國(guó)際環(huán)境turbulent and volatile international environment