Have you ever quietly passed gas? Have you ever heard someone else's fart? Haha! Don't shake your head, don't sneak a smile—passing gas is really no big deal! Let's take a look at the most common ones:
Sichuan Children's Publishing House Original Chinese Scientific Enlightenment Chinese Peace Habit formation (obsolete) Behavioral habits Scientific inquiry Self-awareness Toileting habits Science To use the toilet Habit formation Self-awareness Scientific inquiry Middle class Kindergarten class Pre-kindergarten Health hygiene Physical health Five stars