大会闭幕前，主办方代表发表了简短而真诚的致辞。

Dàhuì bìmù qián, zhǔbànfāng dàibiǎo fābiǎo le jiǎnduǎn ér zhēnchéng de zhìcí.

Before the conference closed, a representative of the organizers delivered a short but sincere speech.

开幕式上，校长代表全体老师致辞。

Kāimùshì shàng, xiàozhǎng dàibiǎo quántǐ lǎoshī zhìcí.

At the opening ceremony, the principal delivered a speech on behalf of all the teachers.

领导临时让我上台致辞，我紧张得手心都是汗。

Lǐngdǎo línshí ràng wǒ shàngtái zhìcí, wǒ jǐnzhāng de shǒuxīn dōu shì hàn.

The leader suddenly asked me to go on stage to give a speech, and I was so nervous that my palms were sweaty.