n. a person who keeps watch over something or someone
n. the person who plays that position on a football team
n. a device designed to prevent injury or accidents
n. a posture of defence in boxing or fencing
n. 守卫者, 警戒, 护卫队, 防护装置
vt. 保卫, 看守, 当心
vi. 防止, 警惕, 警卫, 看守
1. The guard at the entrance checked our tickets.
入口处的保安检查了我们的票。
2. Always guard your personal information online.
在线上总是要保护好你的个人信息。
3. The dog is trained to guard the house at night.
这只狗被训练在晚上守卫房子。