1·For thirty years now I have been studying my fellowmen. I don "t know very much about them."
三十年来，我一直在研究我的人类同胞，但至今了解不多。
2·For thirty years now I have been studying my fellowmen.
三十年来，我一直在我的人类同胞，但至今了解多。
3·Although William Blake seems isolated from his contemporaries, he is in fact much concerned about the fate of his fellowmen.
虽然威廉·布莱克看来似乎与世隔绝，其实他非常关心同胞的命运。
4·Been studying my fellowmen. I don't know very much about them.
骗性。三十年来，我一直在研究我的人类同胞，但至今了解不多。
5·For thirty years now I have been studying my fellowmen. I do not know very much about them.
三十年来，我一直研究我的人类同胞，但至今了解不多。