丧家之犬的英文：
[Literal Meaning]
lose/home/aux./dog
a homeless dog

[解释]
无家可归的狗。比喻无处投奔，到处乱跑的人。

[Explanation]
to feel lost;outcast

[例子]
这个可耻的叛徒好像丧家之犬，只能灰溜溜地躲到一个没有人注意的地方。

[Example]
This shameful traitor was outcast and could only hide himself at an unknown place.