士兵守卫大使馆的主要大门。

Soldiers ___guard the main doors of the embassy.

一名安全官员守卫着博物馆里的珍贵文物。

A security officer ___guards the valuable artifacts in the museum.

大型犬可以保护牲畜免受狼的袭击。

Large dogs can ___guard livestock from wolves.