第五课

The navel, commonly known as the belly button, is a small depression or hollow located in the center of the abdomen. It is a remnant of the umbilical cord that connected a developing fetus to the placenta during pregnancy. The navel serves as a point of entry for nutrients and oxygen for the developing fetus. After birth, it remains a unique and distinguishing feature of the body. The navel is a visible reminder of our connection to our early beginnings and is often considered a neutral or sensitive area on the abdomen. It holds cultural and symbolic significance in various traditions and practices, representing the bond between mother and child or symbolizing birth and new life. The navel is a distinctive and intriguing aspect of the human body.