Despite the heavy static, the pilot's radio transmission remained intelligible enough for the control tower to issue landing instructions.
尽管有强烈的静电干扰，飞行员的无线电传输仍然足够清晰，使控制塔能够发出着陆指令。
Which choice best defines “intelligible”?
D — Able to be understood.. “intelligible” means Able to be understood..
Which word means “Able to be understood.”?
C — intelligible. “intelligible” means Able to be understood..
intelligible — Able to be understood.. In Chinese: 可理解的；清晰的.
intelligible is pronounced //ɪnˈtɛlɪdʒəbl//.
Despite the heavy static, the pilot's radio transmission remained intelligible enough for the control tower to issue landing instructions. (尽管有强烈的静电干扰，飞行员的无线电传输仍然足够清晰，使控制塔能够发出着陆指令。)
clear, comprehensible, understandable — all close in meaning to intelligible (Able to be understood.).
unintelligible, obscure — each the opposite of intelligible (Able to be understood.).
Yes. intelligible is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
intellig(理解) → 听得懂。