英和和英

hard on the knees

to kneel （down）―fall on one's knees―drop on one's knees―go down on one's knees

（膝を屈めるだけの意味なら）to bend one's knees―（礼拝、服従するの意味なら）―bow the knee （to or before god or man）―（屈服するの意味なら）―come to one's knees

to slap one's thigh

to expose one's knees―show one's knees

one knee

to squat in easy state―sit in a negligent posture

on bended knee

to commence falling on one's knees

to kneel

the leg from the knee to foot

to cross one's legs （tailor-fashion）

to sit knee to knee with one―sit opposite each other

to draw nearer

bending the knees

to kneel down again

the joint of a knee

to sit knee to knee with one―sit opposite each other

a rug for kneeling on called {'hizatsuki'}

both knees

to have a familiar talk with one

an act of crossing one's legs at the knees

Your knees are out.

a bone in a knee

a dislocated knee

Down on your knees!

with shaking knees

the articular muscle of the knee

My knee hurts.

trousers ending above the knee