a last resort

• n. 最后一招

a last resort的用法和样例：

例句

1. He discovered that all grassland squirrels made straight for the trees when pursued, and only chose holes in the ground, or hollow logs, as a last resort.
   他发现，所有的草地松鼠当被追捕时，首选都是直爬上树，实在没有办法时才选择地洞或中空的木钻。
2. As a last resort, go away and never come back.
   不得已，就走开别再回来。