反言
2.The Application of Promisary Estoppel --The analysis of the case"D&C builders V.Ress
3.A bar preventing one from making an allegation or a denial that contradicts what one has previously stated as the truth.
4.This principle is mainly applied to two kinds of situations: negotiorum gestio and donation, and principle of waiver and estoppel.
5.The Estoppel of Anglo-American law system, which is a substitute and supplement of consideration, is the result of application of the principle of good faith and equitable idea in order to protect transaction security.
6.When the incorporation has some defectives, the "de facto corporations" and "corporations by estoppel" in common law is conditional ratification of a legal entity, while the invalid incorporation system in Roman law is to deny the status of a corporation by suit.
7.According to this paper, when a negotiable instrument is altered, the man who have altered a negotiable instrument, the man whose negotiable instrument have been altered, the signer who have signed subsequent to the alteration, and the signer who can not discern his signature is previous or subsequent to the alteration, should assume consequential legal liability, The holder and Payer of bills, and The signer who have signed subsequent to the alteration, all may assume risk responsibility; and burden-sharing of risk responsibility refer to principle of equitable burden-sharing in civil law, and according to four kinds of recommended measure whose anther advance.
8.For when he had carried the consulship for a friend of his, against the pursuit of Sylla, and that Sylla did a little resent thereat, and began to speak great, Pompey turned upon him again, and in effect bade him be quiet.

9.Starting from the beginning of the 21(superscript st) century, the U.S.-Japan security alliance has been developing steadily so that China and Japan cannot escape from the cycle, of containing and counter-containing as far as "system" is concerned.

