A human being held in bondage; a bondsman; serf.

奴隶；仆役；农奴。

A drudge.

服贱役者。

One under the power of a habit or vice.

耽溺于恶习之人。

To work like a drudge; toil.

做苦工；做牛马。

A slave is the actual legal property of another, and is entirely subject to his owner.

Slave 被视作他人之合法财产，完全受制于其主人。

A vassal was one who held land under feudal tenure; the word is now in literary usage interchangeable with slave.

Vassal 指在封建制度下领有土地而效忠地主的人；今此字与 slave 可换用。

A serf is one attached to the estate on which he lives, who is and, like the land itself, may be transferred to a new owner.

Serf 指不能离开工作地的农奴，土地转手时，他亦随之而易主。