“罪刑法定”和“罪刑相适应”这两个原则均为中国刑法规定的一项基本原则。涉及到这种专业术语时，首先需要了解其意思，然后再搜索查证是否有官方译文，不能闭门造车。

“罪刑法定”原则的基本含义是“法无明文规定不为罪”和“法无明文规定不处罚”。即犯罪行为的界定、种类、构成条件和刑罚处罚的种类、幅度，均事先由法律加以规定，对于刑法条文没有明文规定为犯罪的行为，不得定罪处罚。

在此从China Daily上查到了对于罪刑法定原则的几种译法，分别为：the principle of legally prescribed punishment for each specified crime、no penalty without a law、assessing penalty by law，具体见下文。其中第一种译法稍显繁琐，第三种比较直白，而第二种则出自一句拉丁语，Nulla poena sine lege，意思是法无明文规定不处罚，因此，翻译时可以采用第二种为主。

坚持依法惩罚犯罪和依法保障人权并重，坚持罪刑法定、罪刑相适应、适用刑法人人平等和审判公开、程序法定等基本原则，真正做到有罪依法惩处，无罪不受刑事追究。

We shall adhere to the basic principle of legally prescribed punishment for each specified crime, that of suitable punishment to each crime, that of applying the Criminal Law to people on an equal footing, that of public trial, and that of statutory procedures, etc., and guarantee that those who are guilty will be punished according to law while those who are innocent will not be investigated for criminal liabilities.

必须加强人权司法保障，严格落实罪刑法定、疑罪从无、证据裁判、公开审判等司法理念和原则，坚决防止和纠正冤假错案，维护人民群众对法治建设的信心。

By stringently adhering to judicial principles such as no penalty without a law, innocent until proven guilty, evidentiary adjudication, and open hearings, people’s courts need to engage in resolute efforts to prevent and rectify miscarriages of justice, thereby maintaining public confidence in our efforts to promote the rule of law. 

发布《关于推进以审判为中心的刑事诉讼制度改革的意见》及其实施意见，推进以审判为中心的刑事诉讼制度改革，严格贯彻罪刑法定、证据裁判、非法证据排除等法律原则，确保审判程序合法化、正当化，保证庭审在查明事实、认定证据、保护诉权、公正裁判中发挥决定性作用。

 “The Opinions on Pushing Forward the Reform of the Criminal Litigation System Centering on Trials” and its implementing rules have been released to accelerate the reform of the criminal litigation system centering on trials, to strictly carry out the principle of assessing penalty by law, evidence-based adjudication and excluding illegally-obtained evidence, to guarantee legalization and justification of trial procedures, and to ensure that trial in court plays a decisive role in investigating facts, confirming evidence, protecting litigants’ rights, and impartially adjudicating cases.

罪刑相适应原则是指“刑罚个别化原则”的对称。又称“罪刑均衡原则”。也称“罪刑等价原则”。刑自罪生，罪重刑重，罪轻刑轻，罪刑均衡。既犯罪是原因，刑罚是结果，刑罚由犯罪所引起，犯罪社会危害性重的，刑罚亦重，犯罪社会危害性轻的，刑罚亦轻，刑罚的轻重取决于犯罪社会危害性的大小，犯罪社会危害性的大小决定刑罚的轻重。

关于这一原则的译法主要有以下几种：the principle of suitable punishment to each crime; the principle of suiting punishment to crime，差别不太大，翻译时两者皆可。

坚持依法惩罚犯罪和依法保障人权并重，坚持罪刑法定、罪刑相适应、适用刑法人人平等和审判公开、程序法定等基本原则，真正做到有罪依法惩处，无罪不受刑事追究。

We shall adhere to the basic principle of legally prescribed punishment for each specified crime, that of suitable punishment to each crime, that of applying the Criminal Law to people on an equal footing, that of public trial, and that of statutory procedures, etc., and guarantee that those who are guilty will be punished according to law while those who are innocent will not be investigated for criminal liabilities.

This is required by the logical relation between the principle of a legally prescribed for a special crime,the principle of suiting punishment to crime,violation of fraud,crime of fraud and crime of financial fraud.

非法占有为目的是所有金融诈骗罪的必备要件,这是罪刑法定原则、罪刑相适应原则以及诈骗违法行为、诈骗罪和金融诈骗犯罪之间的逻辑关系的必然要求。