Classes with more boys: Boys bring paper towels with them.
Become more and more refined, and girls become more and more men.
In classes with more boys and fewer girls, girls are national treasures.
And if there are few girls, there won't be much feeling of intrigue.
More boys: the feeling of Shaolin Temple
More girls: the feeling of nuns.
A class with many boys.
Seeing girls reminds me that there are girls in our class.
It is completely consistent with the statement that rabbits don't eat grass beside their nests.
Classes with many boys talk recklessly.
Subconsciously treat those girls as men.