没有变化格式要求吗?否则有很多种变化形式,如:
over 18 years old 换写成 more than 18 years old 或 who are over 18 years old 或 who are more than 18 years old;
或 把 people over 18 years old 换写成 Adults;
join 可以换写成 be a member of
can 可以换写成 are able to
注:以上变化可以任意组合(不必同时都变),即可得到多个同义句.