impenetrable
adj. 不能穿过的；不可理喻的
副词：impenetrably 名词：impenetrableness
近义词：dense，impassable，unintelligible，inaccessible，unapproachable，unclear，obscure，vague，abstruse，deep，enigmatic，thick，solid，impermeable，dark，incomprehensible，unsolvable，unfathomable，indecipherable，inscrutable，cryptic，heavy，penetrable，
英英释义
Adjective
- not admitting of penetration or passage into or through;
"an impenetrable fortress" "impenetrable rain forests"
- permitting little if any light to pass through because of denseness of matter;
"dense smoke" "heavy fog" "impenetrable gloom"
- impossible to understand;
"impenetrable jargon"
例句
用作形容词(adj.)
- Armor plate is impenetrable by ordinary bullets.装甲板普通子弹打不穿。
- Some wild pheasants love impenetrable jungles.有些野雉喜欢生活在密密的丛林里。
- The motive for the crime was impenetrable.那起罪行的作案动机叫人捉摸不透。
- This history book is completely impenetrable to me.这本历史书我完全看不懂.