同根派生 英汉例句Any of several Old World plants of the genus Melilotus in the pea family,having compound leaves with three leaflets and narrow racemes of small white or yellow flowers.草木犀植物，产于东半球的各种豆科草木犀属植物，生有具三片叶的复叶，长有白色或黄色的小花，成狭窄型腋生总状花序。