Perjury is a crime, not an ordinary lie. In a court of law, a person must promise to tell the truth — sometimes with an oath, sometimes by signing a paper.

Perjury perjury is是 a crime一種罪, not an ordinary lie不是普通的謊言。In a court of law在法庭上, a person一個人 must promise to tell the truth必須承諾說實話 — sometimes with an oath有時候用宣誓的方式, sometimes by signing a paper有時候用簽文件的方式。

If they then say something they know is not true, that lie is perjury, and the act of telling it is also called perjury. You usually say someone commits perjury.

If they then say something they know is not true如果那個人接著說出自己明知不是真的的話, that lie那個謊言 is就是 perjury perjury, and而 the act of telling it說出那個謊的這個行為 is also called也叫做 perjury perjury。You usually say一般會說 someone commits perjury某人犯下偽證罪。

The word belongs to law, news, and formal talk; you would not use it when a child fibs to a parent, or when friends shade a story. The promise has to come first, and it has to be a legal one.

The word這個字 belongs to屬於 law, news, and formal talk法律、新聞和正式場合的用語; you你 would not use it不會用它 when a child fibs to a parent在小孩對父母說個小謊時, or or when friends shade a story或朋友把故事講得稍微走樣時。The promise那個承諾 has to come first一定要先存在, and而且 it它 has to be必須是 a legal one一個法律上的承諾。

In many countries it can mean a fine or even prison, which is why lawyers treat it as a heavy word. People also stretch it a little in angry talk — 'that's perjury!' — but strictly it is the court (or a sworn statement), not every false word.

In many countries在許多國家, it它 can mean可能代表 a fine or even prison罰款、甚至是坐牢, which is why這就是為什麼 lawyers律師 treat it as a heavy word把它當成一個很嚴重的字看待。People大家 also stretch it a little in angry talk在生氣的時候也會把這個字用得寬鬆一點 — 'that's perjury!'「that's perjury!」 — but嚴格來說 strictly it is指的是 the court (or a sworn statement)法庭（或具結聲明）, not every false word而不是每一句假話。