Offline 离线的,下线的。从表面看,社交媒体本应促进意见交流,然而,美国皮尤研究中心最近的一项研究发现,Social media may in fact discourage people from expressing their opinions on controversial issues, even when they are offline.
take on 意思是对抗。President Obama and British Prime Minister David Cameron are trying to build a broad international coalition to take on Islamic extremists
Override 动词,有推翻的意思,过去时是 overrode。Missouri lawmakers overrode Governor Nixon's veto to pass the law, requiring women to wait 72 hours before getting an abortion.