a guard dog中文什么意思

担任警戒的狗

• guard:    n. 1.警卫；警戒；看守。 2.防 ...
• dog:    n. 1.犬，狗；猎犬；犬科动物。 ...
• be on guard:    警惕

例句与用法

1. The film opens with a shot of a guard dog
   电影开始的时候，是一个看门狗的镜头。
2. Yeah , weii , he thinks he ' s a guard dog
   是的，那个，他以为他是条看门狗
3. China ' s nouveaux riches are willing to pay top dollar for a guard dog to protect their homes in the booming cities of china ' s interior
   在内地蓬勃发展的城市中，为了能弄条护卫犬看家，一夜暴富的中国新富们，就算花出大把银子也不会眨下眼。
4. After several unsuccessful attempts to catch her ( she killed a guard dog with a single blow of her club ) , villagers tried to lure her into captivity with a pitcher of water , but she was startled and fled to the topmost branches of a tree
   村民们企图抓住她，但好几次都失败了(她一棒就打死了一条看门狗) ，后来村民们企图用一只装满水的罐子引诱并抓住她，但是她被吓坏了，爬到一棵树的顶端。