He obeyed, and was promptly arrested as a suspicious character prowling within the precincts of the palace.

他照做了，但很快就被抓了起来，因为那军官认为他是个可疑人物，在宫里的各个角落里鬼鬼祟祟。

He is a suspicious character.

他是个可疑的人物。

The police are watching themovements of the suspicious character carefully.

警察正密切注意着那个可疑人物的行动。

The police is carefully watch the movements of the suspicious character carefully.

警察密切注意著那个可疑人物的行动。