stumble on造句

I walked up one road , down another , expecting to stumble on something recognizable.
我东投西奔, 指望撞见认得的东西.

Should my feet sometimes stumble on the way. stay with me.
我的双腿有时会在途中绊倒, 所以请陪伴我.

A horse may stumble on four legs.
马有四条腿,亦有失蹄时.