Raise vigilance
呀，出错误了！再试下吧。
暂时没有您的查询历史
不再显示查询历史
raise alertness; heighten vigilance
象所有健康问题一样，提高警戒的关键渠道就是教育。
As is the case with all health matters, education is key.
这种全球传播导致世卫组织呼吁提高警戒级别并最后宣布出现流感大流行。
It is this global spread which led WHO to call for increasing phases and finally, to announce that a pandemic was underway.
