unsurmountable

The fallen boulder made the narrow mountain pass unsurmountable for the jeep.

用法提示：形容词 unsurmountable 作宾语补足语，表示山口无法翻越或通过。

She saw her lack of experience as an unsurmountable barrier to getting the job.

用法提示：形容词 unsurmountable 作定语修饰 barrier，表示无法逾越的障碍。

To the children, the high playground fence seemed unsurmountable, so they gave up trying to climb it.

用法提示：形容词 unsurmountable 作表语，表示围栏无法被翻越。