汉英对照/膝关节连接大腿和小腿
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膝关节连接大腿和小腿，由两个关节组成：一个在大腿骨和小腿骨之间，另一个在大腿骨和膝盖骨之间。
The knee joint connects the thigh and the shank and consists of two joints: one between the thigh bone and the shank bone, and the other between the thigh bone and the kneecap.
膝关节连接大腿和小腿，由两个关节组成：一个在大腿骨和小腿骨之间，另一个在大腿骨和膝盖骨之间。
The knee joint connects the thigh and the shank and consists of two joints: one between the thigh bone and the shank bone, and the other between the thigh bone and the kneecap.