请将下面这段话翻译成英文：

徐霞客一生周游考察了十六个省，足迹几乎遍及全国。他在考察的过程中，从来不盲目迷信书本上的结论。他发现前人研究的地理的记载有许多不是很可靠的地方。为了进行真实细致的考察，他很少乘车坐船，几乎全靠双脚。

参考答案:

During his life time,Xu Xiake had visited sixteen provinces,leaving his footprints in nearly every corner of our country.He neither used books as the single guide for his travel,nor did he accept conclusions given by books without thinking.As a result,he finally discovered considerable inaccuracies occurring in the geographical notes written by predecessors.In order to get a detailed and truthful picture of the places he visited,he rarely travelled by cart or boat,but almost all on foot.

1.徐霞客一生周游考察了十六个省，足迹几乎遍及全国。

分析:

遍及:in nearly every corner of…

1. 他发现前人研究的地理的记载有许多不是很可靠的地方。

分析:

“不是很可靠的地方”也就是“不准确的地方”，故用inaccuracies。

徐霞客（1587-1641），名弘祖，字振之，号霞客，汉族，明南直隶江阴（今江苏江阴市）人。伟大的地理学家，旅行家和探险家。