crura rectilineum的用法和樣例：
例句
- The lateral nasal and columellar arteries then meet over the dorsal region, forming an alar arcade that runs along the cephalic margin of the lateral crura.
側鼻動(dòng)脈和鼻小柱動(dòng)脈在鼻背區域匯合，形成沿外側腳頭側緣走行的鼻翼弓。 - The lower leg is represented by the medial crura whereas each upper leg consists of a lateral crural complex based bilaterally on the piriform aperture.
下方的腿代表的是內側腳，同時(shí)上方兩條腿則代表雙側的梨狀孔上的外側腳復合體。
