1. The king's vassals were loyal to him and served him faithfully.
国王的臣子对他忠诚，忠实地服务他。

2. The vassals of the lord were expected to provide military service in times of need.
领主的臣子在需要的时候应提供军事服务。

3. The vassals were granted land in exchange for their loyalty to the lord.
臣子因对领主的忠诚而获得土地。

4. The vassals paid tribute to the lord as a sign of their allegiance.
臣子向领主献上贡品作为效忠的象征。

5. The vassals were required to attend the lord's court and participate in his council meetings.
臣子必须出席领主的法庭并参加他的会议。

6. The vassals were expected to defend the lord's lands and interests against external threats.
臣子应该保卫领主的土地和利益免受外部威胁。