servitude

许多劳工被迫在恶劣条件下过着奴役般的生活。

Many laborers are forced to live in harsh conditions of ___servitude.

许多非洲人在18世纪被迫生活在奴隶制的束缚下。

Many Africans were forced to live in ___servitude during the 18th century.

在19世纪，许多罪犯被判处苦役来修建铁路。

In the 19th century, many criminals were sentenced to ___servitude building railways.