lame
adjective uk/leɪm/ us/leɪm/
(UNABLE TO WALK)
（尤指动物）瘸的，一瘸一拐的
(especially of animals) not able to walk correctly because of physical injury to or weakness in the legs or feet
(NOT SATISFACTORY)
（尤指借口或论据）站不住脚的，无说服力的
(especially of an excuse or argument) weak and unsatisfactory
a lame excuse 站不住脚的借口