life cycle

(biology 生) series of forms into which a living thing changes as it develops 生活周期（生物发展过程的系列变形）; 生活史: the life cycle of the butterfly 蝴蝶的生活周期.

lido, lie, lie down, lie in, lie on, lie over, lie up, lie-detector, lie-down, lie-in, lied, liege, lien, lieu, Lieut (also Lt), lieutenancy, lieutenant, life, life annuity, life assurance, life insurance, life expectancy, Life Guards, life history, life interest, life peer, life sciences, life story, life work, life-and-death (also life-or-death), life-blood, life-boat, life-giving, life-guard, life-jacket, life-preserver, life-raft, life-saver, life-saving, life-size, life-size, life-sized,