inaugurate; open; the curtain rises

1. 她友好的開幕詞確定了整個會議的基調。
   Her friendly opening speech set the tone for the whole conference.
2. 交易會將于5月19日開幕。
   The fair was to open on May19.
3. 我們有必要參加開幕式。
   We were obligated to attend the opening ceremony.
4. 由于市長缺席，由我主持展覽開幕。
   It fell upon me to open the exhibition in the mayor's absence.
5. 奧運會的開幕式，場面十分壯闊。
   The opening ceremony of the Olympic Games was grand.

開的英語翻譯：

幕的英語翻譯：