in a extremity

• 陷入绝境；智穷计尽；智尽力竭

in a extremity的用法和样例：

例句

1. They have got into a helpless impasse there.
   他们在那里陷入绝境。
2. We had come to a dead end in our research.
   我们的研究工作已陷入绝境。