英语语法分析

Methods Epidemiological methods was used to analyze the surveillant data of injury death from 1996 to 2000.

方法采用流行病学方法对1996 ~ 2 0 0 0年伤害的死亡监测资料进行分析。

Objective To study the health state of workers exposed to tetraethyl lead petrol, and to find a surveillant index for them.

目的研究接触四乙基铅汽油作业人员健康状况，探讨四乙基铅汽油接触者的监护指标。

Conclusions it is urgent to increase vaccination quality, improve inoculation rate and establish surveillant system of measles.

结论应不断加强麻疹接种质量、提高麻疹的接种率并建立健全快速敏感的监测系统。