膝处于坐姿的人从腰到膝盖的大腿正面部位 The front area from the waist to the knees of a seated person.
前方直接在前面的地区、部位或位置 The area, location, or position directly before or ahead.
针灸，针刺疗法，针刺麻醉以细针扎入身体特定部位以减轻疼痛或诱导局部麻醉的方法 A technique, as for relieving pain or inducing regional anesthesia, in which thin needles are inserted into the body at specific points.
