求翻译：学生会决定于明天晚上7点在学生礼堂举行国庆庆祝会。我们邀请了歌唱家作精彩的表演。请同学们届时参加。欢迎老师们参与。是什么意思？

Students' Union decided that the National Day celebration held in the student hall at 19 o'clock tomorrow. We invite the singer for the brilliant performances. Then ask someone to participate. Teachers to participate.

Students will decide tomorrow night at 7 p.m. in the student Hall held a National Day celebration. We have invited the singer for the show. You students will participate in. Teachers are welcome.

The student association decided 7 o'clock will hold the National Day celebration party in tomorrow evening in the student assembly hall.We invited the singer to make the splendid performance.Asks schoolmates to participate at the appointed time.Welcome teachers to participation.

Students ' Union decided to 7 o'clock tomorrow evening national day celebrations held in the student Hall. We invited singer for spectacular performances. Students will participate in. Teachers are welcome to participate in.