a dramatic improvement惊人的进步
A fifth year of drought is expected to have dramatic effects on the California economy.连续五年的干旱估计会对加利福尼亚的经济造成巨大影响。
dramatic advances in air safety航空安全方面的显著进步
This policy has led to a dramatic increase in our prison populations.这项政策导致监狱服刑人员数量剧增。