to guard的用法和樣例：
例句
- He urged them to guard against conceit.
他要求他們防止驕傲自滿。 - A number of men were detached to guard the right flank.
派遣了一些士兵守衛右翼。 - Where will I find brave men to guard the four corners of my land?
安得猛士兮守四方？ - A number of soldiers were detached to guard the building.
許多士兵被派去保護這座建筑物。
