单语范例（未经PONS编辑处理）
The breast is scaleless until the origin of the pelvic fins and up to the origin of the pectoral fins.
en.wikipedia.org Males have significantly larger pectoral fins than females.
en.wikipedia.org The pontifical pectoral cross is distinct from the simple cross, the use of which is often permitted by the pope to members of cathedral chapters.
en.wikipedia.org Laterally, this naked area of the breast is separated from the naked base of the pectoral fins by a moderate band of scales.
en.wikipedia.org The sand devil's flattened body and enlarged pectoral and pelvic fins give it a ray-like appearance.
en.wikipedia.org