in-,不，非，defensible,可防守的。

1. To argue otherwise is trying to defend the indefensible.

持相反的论点就是试图为站不住脚的事情强辩。

2. She described the new policy as "morally indefensible".

她认为新政策“在道德上是站不住脚的”。

3. The checkpoint was abandoned as militarily indefensible.

检查站因为军事上无法防御而被舍弃。

4. His action was indefensible.

他的行为是不可原谅的。

5. The minister was accused of defending the indefensible.

那位大臣被指责庇护不可原谅的行为。