(noun.) inactivity that is passive and monotonous, comparable to the inactivity of plant life; 'their holiday was spent in sleep and vegetation'.
(noun.) an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart).
(noun.) all the plant life in a particular region or period; 'Pleistocene vegetation'; 'the flora of southern California'; 'the botany of China'.
(noun.) the process of growth in plants.
乔校对
克里斯整理