She digressed from her prepared speech to pay tribute to the president.

她偏离了预先准备的讲稿，对总统表示了敬意。

《柯林斯英汉双解大词典》

So how can you make sure that your well prepared speech is equally well delivered?

那么你怎么才能保证你精心准备的演讲能像你预期的那样很好地讲演出来呢？

youdao

As she began to deliver her prepared speech, she dropped her note card on the floor.

就在她要开始进行她事先准备好的演讲时，她把写了要点的卡片掉在了地上。

youdao

He prepared a speech which explained his thoughts.

VOA: special.2009.10.29

The president said the United States is prepared to engage in a dialogue with the Cuban government that includes human rights, free speech,democratic reform, migration,and economic issues.

VOA: standard.2009.04.17

Edwards said her one misgiving is that she has not yet seen Palin speak off the cuff without a prepared speech.

NPR: Hillary Clinton Stumps For Obama In Florida

Mr. Maziarz read almost word-for-word 14 sentences from an 18-sentence speech prepared by Mr. Cuomo's office.

WSJ: Cuomo Staff Penned Praises for the Boss

In his first press conference, the lawmaker disposed of the boilerplate policy speech prepared for him by ministry bureaucrats.

CNN: ASIANOW - TIME Asia