Usually, there are at most 10 people, at least 3 to 4 people.
Usually, we have 10 people at the most and 3 to 4 people at the least.
「普通は多くて10人少なくて3、4人くらい集まります。」は英語に訳すとこのようになります。
Usually, there are at most 10 people, at least 3 to 4 people.
Usually, we have 10 people at the most and 3 to 4 people at the least.
もう少し短く行ったら We usually have between 3 to 10 people in class. か There are usually 3 to 10 people in class と言えば自然です。
ご参考までに。