Lichens provide the only sustenance available to the herd during the four darkest months of the year.
在一年中最黑暗的四个月里，地衣是这群鹿唯一能获得的食物来源。
Which choice best defines “sustenance”?
A — Nourishment; support; maintenance. “sustenance” means nourishment; support; maintenance.
Which word means “nourishment; support; maintenance”?
A — sustenance. “sustenance” means nourishment; support; maintenance.
sustenance — nourishment; support; maintenance. In Chinese: 食物，营养；维持.
sustenance is pronounced /ˈsʌstənəns/.
Lichens provide the only sustenance available to the herd during the four darkest months of the year. (在一年中最黑暗的四个月里，地衣是这群鹿唯一能获得的食物来源。)
nourishment, provisions, subsistence — all close in meaning to sustenance (nourishment; support; maintenance).
Yes. sustenance 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.
sus-(under)+ ten(hold)+ ance→ livelihood, food.