attack dog

US /əˈtæk dɔːɡ/
UK /əˈtæk dɔːɡ/
"attack dog" picture
1.

攻击犬, 警犬

a dog trained to attack on command or to defend a person or property

:
The security guard had an attack dog with him.
保安带着一只攻击犬
They trained the German Shepherd to be an effective attack dog.
他们把德国牧羊犬训练成一只有效的攻击犬
2.

攻击者, 抨击者

a person or group that aggressively criticizes or attacks an opponent, especially in politics or business

:
The senator's opponent used his campaign as an attack dog.
参议员的对手利用他的竞选活动作为攻击犬
The media often portrays certain commentators as political attack dogs.
媒体经常将某些评论员描绘成政治攻击犬