Babies have poor resistance and are prone to catching colds if they are not careful. Babies are prone to coughing, runny nose, and other symptoms after catching a cold. Excessive nasal mucus can lead to stuffiness in the nose, which can affect the baby's normal breathing. What should a three-year-old baby do if their nose is not ventilated? When...

　　Each child has their own unique characteristics that set them apart from others, and their growth rate cannot be generalized. Some babies have teeth and speak earlier, while others speak later. So, how many teeth does a 2-year-old baby have? Firstly, generally speaking, by the time a baby is two years old, they should have grown around 20 small...