单词 | impenetrable |
例句 | impenetrable adjective 1.•impenetrable armor:impervious, impermeable, indestructible, solid, thick, unyielding | impregnable, inviolable, invulnerable, unassailable, unpierceable | informal bulletproof. ANT permeable, vulnerable. 2.•a dark, impenetrable forest:impassable, unpassable, inaccessible, unnavigable, untraversable | dense, thick, overgrown | archaic thickset. ANT sparse, accessible. 3.•an impenetrable clique:exclusive, closed, secretive, secret, private | restrictive, restricted, limited. ANT open. 4.•impenetrable statistics:incomprehensible, unfathomable, inexplicable, unintelligible, inscrutable, unclear, baffling, bewildering, puzzling, perplexing, enigmatic, cryptic, confusing, abstruse, opaque | complex, complicated, difficult. ANT clear. |
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