protctfrom和preventfrom区别？

prevent from - 防止 Prevent it from sunburn. 防止它晒伤。 keep from - 远离 Keep children away from it. 让孩子远离它。 protect from - 保护 Protect your skin from dryness. 保护你的皮肤，不干燥。 defend with - 捍卫 Defend our country with your actions.