The surveillancenetwork tracks objects approximately 10 centimeters in diameter and larger.
该监测网的监测对象是直径10厘米以上的太空垃圾。
2
Analyses are being performed by two WHO influenza collaborating centres as part of the global influenza surveillancenetwork.
作为全球流感监测网络成员的两个世卫组织流感合作中心正在开展分析工作。
3
"We haven't found evidence of infected pigs," said Ian Lipkin, a Columbia University epidemiologist and member of the World Health Organization's surveillancenetwork.