今天我们要学的词是 stiffen。stiffen is spelled s-t-i-f-f-e-n, stiffen。
stiffen来自于stiff，意思是僵硬，强硬，顽固，stiffen就是变硬、强化。President Donald Trump’s move to close the Palestinian Liberation Organization’s mission in Washington almost certainly will stiffen the Palestinians’ opposition to any Trump peace plan，特朗普总统将关闭巴勒斯坦解放组织驻华盛顿办事处，这一举动几乎肯定会加剧巴勒斯坦人对任何特朗普中东和平计划的反对。Lawmakers look to close loopholes to stiffen drunk driving laws，议员们希望堵上漏洞，加强醉酒驾驶法律。
