n. 饮食,营养;支撑物,维持物,生活资料
拆分: sus-由下向上 + -ten-握,持有 + -ance名词词尾
例:The children were thin and badly in need of sustenance. 这些孩子很瘦,极需要营养。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。
