把植物的种子或幼苗埋在土里，让其生长

adv. 一步一步地 step by step

n. 指物体所受重力的大小 weight

n. 主持会议的人 chairman, of a meeting; 国家、国家机关或党派团体的某级组织的最高领导 chairman, president, of an organization, institution, party or state

kidney, description, race, form, nature, manner, variety, feather, ordering, ilk, style, class, order, stamp, type, genus, category, stripe, kind, strain, cast, shape, denomination, species, persuasion, league, classification, breed, sort

n. 起居中联系作用的媒介 agent, medium, intermediary