英语语法分析

Four laboratory confirmatory methods are commonly used.

一般采用四种实验室确认方法。

The laboratory will conduct confirmatory tests and further characterize the virus.

该实验室将进行确认检测，进一步描述病毒特征。

Confirmatory tests will be performed at one of the WHO Collaborating Centres for Influenza.

世卫组织流感合作中心之一将作进一步确认检测。