1·Leg: in a Biped, the lower limb, jointed at the knee, supporting the Body and used for walking and running.
腿:两足动物的下肢,与膝部连接,用于支撑身体并用来行走和奔跑。
2·For example, the denotation of human is any person such as John and Mary, and its connotation is "biped", "featherless", "rational", etc.
例如,人的外延是任何人,如约翰和玛丽;内涵是“两足动物”“无羽毛的”“有理性的”等等。