Airport security 机场安检新规
2014年 7月 9日 最后更新时间：09:54 GMT
Sniffer dogs and x-ray scans are normal parts of airport security.
Now, laptops and mobiles will come under greater scrutiny.
US transport officials have ordered some airports to intensify the screening of electronic devices.
If it doesn't power up, it doesn't fly, they say.
So before you take off, make sure you've charged your phone.
sniffer dogs 嗅探犬
power up 开机启动