enter /ˈentə/ vt. & vi.1.进入：Robert entered college that autumn. 罗伯特那年秋天进了大学。 Please do not enter without knocking on the door. 进来之前请先敲门。2.参加：He refused to enter the discussion. 他拒绝参加讨论。 3.使加入：enter him for the contest 替他报名参加比赛。 4.记入；登录：enter an account in a book 把一笔账记在账簿里 5. 用于短语动词enter into参与：The company had been invited to enter into settlement negotiations.该公司被邀请参与解决方案的谈判。enter (up)on开始（参与）：She never entered upon any action of importance without first consulting her husband.不跟丈夫商量她绝不会介入重大行动的。