汤姆在1971年第一次发送电子邮件。
30个音乐俱乐部的学生( included 是被包括)
人们在许多年前用许多不同的方式写数字。
Tom first sent the e-mailin 1971
The Music Club including Thirty students.
People wrote numbers in many different ways long long ago.
It was the first time for Tom to send the e-mail in 1971.
The Music Club include thirty students.
Numbers were wtoten in many different ways by people many many years ago.
The first time for Tom to sent the e-mail is in 1971.
The Music Club includes thirty students.
Long long years ago, numbers are written in lots of different ways by people.
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