词汇
2真题出现次数
2套试卷
1次落在考点上
真题原句共 2 句
they have to step up security measures.
他们必须加强安保措施。
Such debates reflect fierce discussions across the US and around the world, as researchers, policymakers, teachers and students step up demands for a greater focus on teaching about the facts of climate change in schools.
这类辩论反映出美国乃至全世界正在进行的激烈讨论，因为研究人员、政策制定者、教师和学生都在加紧要求学校更加重视讲授有关气候变化的事实。