She blundered in not closing the door after leaving .
她犯了个走后不锁门的愚蠢大错。
He blundered in and out .
他踉踉跄跄地走进走出。
He blundered through the dark forest .
他在黑暗的森林中跌跌撞撞地走。
One who thinks others cannot live without him namely more blundered .
如果认为别人没有你不能生活，你更是错了。
It is hard to think of a messier and more wasteful way of shifting from fossil and nuclear fuel to renewable energy than the one germany has blundered into .
