本节basic: Basic = Basic English. joint: n. 1.接合,榫接合处,接合点。 2.【解剖学】关节。 ...extremity: n. 1.末端,尽头;极端,极度。 2.〔常 pl.〕困 ...basic joints of the extremities: 本节the basic joints of extremities: 手或趾的基节下载手机词典可随时随地查词查翻译