Unrefined petroleum extracted from the well contains sulfur and other impurities that must be removed during refining.
从油井中提取的未提炼石油含有硫和其他杂质，必须在提炼过程中去除。
Which choice best defines “unrefined”?
B — Not processed to remove impurities; crude. “unrefined” means not processed to remove impurities; crude.
Which word means “not processed to remove impurities; crude”?
D — unrefined. “unrefined” means not processed to remove impurities; crude.
unrefined — not processed to remove impurities; crude. In Chinese: 未提炼的.
unrefined is pronounced /ˌʌnrɪˈfaɪnd/.
Unrefined petroleum extracted from the well contains sulfur and other impurities that must be removed during refining. (从油井中提取的未提炼石油含有硫和其他杂质，必须在提炼过程中去除。)
crude, raw, unprocessed — all close in meaning to unrefined (not processed to remove impurities; crude).
refined, processed — each the opposite of unrefined (not processed to remove impurities; crude).
Yes. unrefined is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. 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.