他含含糊糊地找了个蹩脚的借口，想要解释自己为什么睡着了。He mumbled some lame excuse about having gone to sleep.他们现在会找个蹩脚的借口重新发动战争。They would now find some dubious pretext to restart the war.他是个蹩脚的演员。He was a poor actor....

“蹩脚的”的英语可以翻译为：shoddy，of a kind ...