CDC spokesman Christopher Cox says though the idea is well-intentioned, it is not a good way to protect against serious illness.

VOA: standard.2009.12.18

Yes. My friend, Katy Cox came to visit me.

是的。我的朋友，凯蒂•考克斯来看我，

在工作室发生的事 - SpeakingMax英语口语达人

"When flying low in combat, speed is life. Now,from the left,Captain Smith and Captain Cox return to show center at 300 feet and nearly the speed of sound,".

VOA: standard.2009.11.15

Cox says the best step to protection is vaccination.

VOA: standard.2009.12.18

Nick Cox,the WWF's Dry Forest and Tiger Program coordinator for the countries along Southeast Asia's Mekong River, says the forests of Cambodia's eastern plains offer an intact habitat for reviving wild tigers.

VOA: standard.2010.02.22