An invitation for offer is a declaration to invite other parties to make offers to the inviter. 要约邀请是希望他人向自己发出要约的表示。 Auction announcements, bidding announcements, stockprospecluses,bond prospectuses, fund prospectuses,commercial advertisements and publicity, mailed price lists, etc. are invitations for offer. 拍卖公告、招标公告、招股说明书、债券募集办法、基金招募说明书、商业广告和宣传、寄送的价目表等为要约邀请。 Where the contents of commercial advertisements and publicity meet the conditions for an offer, they constitute an offer. 商业广告和宣传的内容符合要约条件的，构成要约。 An acceptance is the declaration of will by the offeree to assent to the offer. 承诺是受要约人同意要约的意思表示。