lame

那只跛脚的狗跑起来有点困难。

The ___lame dog has some difficulty running.

他说没带作业是因为狗吃了，这理由太蹩脚了。

His excuse about the dog eating his homework was really ___lame.

别玩那个游戏了，它简直无聊透顶。

Stop playing that game. It's ___lame.