在: exist; be living的: 4次方是 The fourth power of 2 i ...顶部: top; upper apex; top half; h ...墙的顶部: coping在……的顶端: at the toof; on toof机身的顶部进气道: top fuselage inlet山或波浪等的顶部: the highest or culminating point the peak陶轮的顶部表面: wheel head填充到区域的顶部: solid to toof zone闸门的顶部构架: top frame of gate站在台阶的顶部: stand at the head of the stairs表土下硬岩层的顶部: rock head复式滑动刀架的顶部滑板: compound rest top阴云的顶部阴沉沉的: toof overcast; top of overcast实体到色带顶端;填充到区域的顶部: solid to toof zone顶部: top; upper apex; top half; headpiece; roof; ridge; meplat (弹丸的)在: Ⅰ动词1.(存在; 生存) exist; be living 精神永在。 the spirit still exists. 我父母健在。 both of my parents are living now.2.(表示人或事物的位置; 留在) stay; remain 在领导岗位 be in one's power; 我父母在北京。 my parents are in beijing. 你的书在桌子上。 your book is on the table.3.(参加; 属于) join or belong to an organization; be a member of an organization 在组织 join an organization4.(在于; 决定于) depend on; lie in; rest with 事在人为。 human effort is the decisive factor. 企业兴衰主要在经营管理。 the uprising or downfalling of an enterprise lies in its management or administration. 事情的成败在你自己的努力。 the success or failure of the matter depends on your own effort.Ⅱ副词(正在) in process of; in course of 一切都在变。 all are changing. 老师在备课。 the teacher is preparing the lesson. 他们在聊天。 they're having a chat.Ⅲ介词(表示时间、处所、范围等) 在半夜 in the midnight; 在礼堂开会 have a meeting in the auditorium; 在车站 at the station; 在这种情况下 under these circumstances; 坐在我右边 sit on my right; 在战争中 during the war; 在整个历史上 throughout history; 在理论上 in theory; theoretically; 在这方面 in this respectⅣ名词(姓氏) a surname 在育zai yu在……北部,在……以北: in/to the north在……顶端,在……上面: on toof = at the toof在……之前,在……前头: ahead of在…后部,在…背部: back of在…后部,在: back of在…后面,在…背部: back of在…后面,在…背后: (in) back of在…里,在…附近: at