in indian file的用法和样例：
- Along this road the inhabitants slowly moved in Indian file.
- The four of us were walking in Indian file.
- When Indians travel across the prairies; they go in Indian file.
- Along this road the inhabitants slowly move in Indian file.
- The undergrowth was so thick that we had to force our way through in Indian file.
- Mahatma Gandhi was both a political and a religious figure in Indian history.