拦路虎的英文：
a lion in the way

Boredom,laziness and failure.These bugaboos,magnified by imagination,keep [ the workaholic ] running(Dun's Review)
烦恼、懒惰和失败，这些拦路虎被想象夸大了，使得[那些为免遭辞退而忘我工作的人]疲于奔命邓恩评论)

He was as brave as a lion.
他勇猛如雄狮。

The lion's share
最大的份额(狮子,驴,狐狸分猎物的寓言故事)

Wake not a sleeping lion
别自找麻烦

A lion is known by his claws
观其爪而知其狮

Beat the dog before the lion.
杀鸡儆猴