food and drink regarded as a source of strength; nourishment
生活资料;食物;营养
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poor rural economies turned to potatoes for sustenance .农村经济贫困,于是把土豆作为食物。
the maintaining of someone or something in life or existence
支撑物;维持物;生计
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he kept two or three cows for the sustenance of his family 他养了两三头奶牛维持家里的生计
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the sustenance of parliamentary democracy .议会民主政治的支撑。
"Middle English: from Old French