11月7日，世界卫生组织在瑞士日内瓦召开了"禽流感问题国际会议"，表示将协助中国做好预防和遏制禽流感疫情的各项工作。为了防止禽流感病毒传染给人类，目前北京已关闭了其168家活禽交易市场。请看外电报道：The UN health agency and Chinese officials were discussing what role the WHO should play, said Roy Wadia, a spokesman in Beijing for the agency. He said it could offer help in field work, lab testing and other areas. Field work指的是“实地调查、实地考察”，如：archeological field work（现场考古工作）；“实地考察工作者”可说成fieldworker。 field 一词有“实地；野外”之意， field test（实地试验）、field trip（实地调查旅行）、field army（野战军）等都是常用的词组。