今天我们要学的词是 monitor. Monitor 做为动词，意思是监控。美国首例埃博拉病毒感染者邓肯上周三去世。Officials are monitoring 10 people who are believed to have had direct contact with Duncan. 有关官员目前正在对十个据信跟邓肯有过直接接触的人进行监控。Five major airports in the U.S. will step up screening procedures to monitor travelers arriving from Ebola-stricken countries in West Africa. 美国五大机场将加强检查措施，监控来自埃博拉病毒肆虐的西非国家的游客。好的，今天我们学习的词是 monitor, monitor, monitor...