و آر ایل:https://www.parents.com/thmb/fqiv0Jx2vfyGUUkiahqBeleFbbE=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/shutterstock_464199479_0-09163d4437ff4e8e8ceec3e300ecdad8.jpg
و آر ایل:https://www.parents.com/baby/development/laughing/when-do-babies-start-smiling/
