The perpetual hum of the laboratory's ventilation system became a constant background noise for the researchers.
实验室通风系统永不停歇的嗡嗡声成为研究人员持续的背景噪音。
Which choice best defines “perpetual”?
C — Never ending or changing.. “perpetual” means Never ending or changing..
Which word means “Never ending or changing.”?
C — perpetual. “perpetual” means Never ending or changing..
perpetual — Never ending or changing.. In Chinese: 永久的;不断的;连续的.
perpetual is pronounced //pərˈpetʃuəl//.
The perpetual hum of the laboratory's ventilation system became a constant background noise for the researchers. (实验室通风系统永不停歇的嗡嗡声成为研究人员持续的背景噪音。)
endless, ceaseless, everlasting — all close in meaning to perpetual (Never ending or changing.).
temporary, intermittent — each the opposite of perpetual (Never ending or changing.).
Yes. perpetual is on the SAT Prep Easy list — mid-frequency academic words that do get tested. 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.
per(始终) + pet(寻求,如 petition) → 一直持续 → 永久的。