He issued an edict that none of his writings be destroyed.

他下了一道命令：他写的所有东西都不得毁掉。

《柯林斯英汉双解大词典》

An official or authoritarian declaration; a proclamation or an edict.

宣言，公告官方或权威性的宣布；公告或法令。

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For example, recently I issued an edict in our company prohibiting meetings on Fridays.

比如，最近我在公司颁布了一项规定，禁止星期五开会。

youdao

So, if we want to get more magnesium into the marketplace at an affordable price, not by government edict, what do we have to do?

所以如果我们想把更多的镁,投诸市场，并让它保持在一个不太昂贵的价格，而且不靠政府法令，我们应该怎样做？

麻省理工公开课 - 固态化学导论课程节选

In another development, Iraqi-based Ayatollah Ali Sastani, a top Shiite authority, issued an edict Tuesday on the conflict.

CNN: Saddam urges battle for every road

Morsy issued an edict in late November declaring his decisions immune from judicial review until the holding of the constitutional referendum.

CNN: Morsy signs Egypt's constitution into law

In 1492, King Ferdinand and Queen Isabella of Spain issued an edict expelling all Jews unwilling to convert to Christianity from Spanish soil.

CNN: Sunday,