1.
One of the many sadnesses in his life was that he never had children.
他一生中的一大憾事就是膝下犹虚.
2.
To go down or rest on one or both knees.
曲膝，下跪使单膝或双膝落下或着地
3.
To bend(the head or knee, for example)low, as in fear or humility.
低头，屈膝因恐惧或谦虚而低（头）或屈（膝）
4.
Deerslayer hesitated a moment, and a gleam of pride and vanity came over him.
杀鹿人犹豫了一下，一种自豪和虚荣心占据了他的心头。
5.
He got to his knees. He bent his head.
他双膝跪下，低下了头。
6.
The Evaluation of the Knee MRI Accuracy under Arthroscopy;
膝关节MRI准确性的膝关节镜下评估
7.
The Clinical Observationon the Therapy of Knee Joint Osteoarthritis Using Moderate Moxibustion
温和灸治疗阳虚寒凝型膝骨性关节炎
8.
bent his knees and knelt;
弯曲他的双膝跪下；
9.
He plucked at his trouser-knees and sat down.
他拉拉裤膝，坐了下来。
10.
protects legs below the knee.
保护膝盖以下的腿部。
11.
Studies of Xining Formula's Curative Effect to Insufficiency of Both Spleen and Kidney Type of Osteoarthritis of Knee;
膝宁方治疗膝关节骨关节炎肝肾亏虚证的临床研究
12.
A sock or stocking that extends just below the knee.
高及膝的长统袜刚到膝盖下部的袜子或长袜
13.
A space or an opening for the knees, as under a desk.
容膝空隙供容纳膝部的空间或空隙，如在桌下
14.
The stockings were blue above the knee and red below it.
那双长袜膝盖以上是蓝色的，膝盖以下是红色的。
15.
Virtual Prototype and Collaborative Simulation of Bionic Knee Joint
仿生膝关节虚拟样机与协同仿真方法研究
16.
The Research on Gene Expression Profile of Kidney-yang Deficiency with Knee Osteoarthritis;
肾阳虚证膝骨关节炎的差异基因表达谱研究
17.
Clinical Research of Warming Needle Moxibustion in Treating 30 Cases of Knee Osteoarthritis with Yang Deficiency and Cold Coagulation Syndrome
温针灸治疗阳虚寒凝型膝骨性关节炎30例
18.
A Discussion on Rising of Ahad Ha-am's Spiritual Zionism
犹太教困境与犹太人困境下的文化犹太复国主义