英语语法分析

The report found that underreporting of deaths occurs in many countries, and that few countries have completely reliable data on road traffic injuries.

该报告发现，许多国家都存在死亡漏报情况，极少数国家具有完全可靠的道路交通伤害数据。

To adjust for underreporting, survey data were collected from three prefectures that represent the hyper-, moderate- and low-endemic regions of Guangxi province.

为了对漏报进行调整，从代表广西壮族自治区具有高、中、低伤寒肠热病流行风险的地区的三个辖区采集了调查数据。