投案自首: surrender oneself to justice [the police; the court]; give oneself up to the police [government]; go to the police and confess; voluntary surrender to court
认为: think; consider; hold; deem; take for; regard as; look upon as; take sb. [sth.] as; be known as; set down as 短语和例子认为无用的规定 stipulation deemed not to be written; 认为十拿九稳 take ... for granted;