impenetrable
US /ɪmˈpen.ə.trə.bəl/
UK /ɪmˈpen.ə.trə.bəl/
1.
堅不可摧的, 無法穿透的
impossible to pass through or enter
:
•
The fortress had an impenetrable defense system.
這座堡壘有一個堅不可摧的防禦系統。
•
The dense jungle was almost impenetrable.
茂密的叢林幾乎無法穿透。
2.
難以理解的, 費解的
impossible to understand; incomprehensible
:
•
His handwriting was almost impenetrable.
他的筆跡幾乎難以辨認。
•
The philosopher's theories were often impenetrable to the average person.
這位哲學家的理論對於普通人來說常常是難以理解的。