He did a lot of research and travelled around the USA looking for information about his ancestors.
他做了大量的研究,在美国跑了许多地方,了解有关祖先的情况。
When he travelled across India, he travelled hard-seat, unreserved, together with peasants and other ordinary people.
当他穿越印度旅行时,他与农民及其他普通人一起乘坐"没有被预定的硬座。