常見例句雙語例句Whatever the case, the shape of the cross-section of the said sphenoid part is either of an isosceles spherical trapezium or of any spherical quadrilateral.無論哪種情況，楔形躰的橫截麪形狀要麼是有兩條邊相同的球形四邊形，要麼是任意球形四邊形。bbs.mf1000.com.cn 返回 isosceles trapezium