on one's knees
表示跪着的状态或求饶。
He was on his knees looking for the ring.
他跪在地上寻找戒指。
膝盖；膝
knees — plural of knee
人体中大腿与小腿之间的关节或关节区域,位于腿部中部。；人体腿部的铰链关节,连接胫骨和腓骨与股骨,前面由髌骨保护；马及类似动物的腕关节,相当于人类的手腕。；四足动物中股骨与胫骨之间的关节；相当于人类的膝盖；鸟类中:
the joint between the thigh and the lower leg
人体中大腿与小腿之间的关节或关节区域,位于腿部中部。
In humans, the joint or the region of the joint in the middle part of the leg between the thigh and the shank.
人体腿部的铰链关节,连接胫骨和腓骨与股骨,前面由髌骨保护
hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella
马及类似动物的腕关节,相当于人类的手腕。
In the horse and allied animals, the carpal joint, corresponding to the wrist in humans.
四足动物中股骨与胫骨之间的关节；相当于人类的膝盖
joint between the femur and tibia in a quadruped; corresponds to the human knee
鸟类中:
In birds:
裤腿中覆盖膝盖的部分
the part of a trouser leg that provides the cloth covering for the knee
覆盖膝盖的衣物部分
The part of a garment that covers the knee.
形状像弯曲膝盖的木材或金属件
A piece of timber or metal formed with an angle somewhat in the shape of the human knee when bent.
膝盖形状的物品或线条中的锐角；拐点
Any knee-shaped item or sharp angle in a line; an inflection point.
用膝盖打击
A blow made with the knee; a kneeing.
幼儿在父母等身边获得早期知识的环境
The presence of a parent etc., where a young child acquires early knowledge.
She fell and scraped her knee on the pavement.
她摔倒了，在人行道上擦伤了膝盖。
用法提示：knee 是名词，指‘膝盖’，在句中作宾语。
The doctor asked me to bend my knee slowly during the examination.
医生让我在检查时慢慢弯曲膝盖。
用法提示：knee 为名词，表示‘膝、膝盖’，作 bend 的宾语。
His knees hurt after he ran the marathon.
他跑完马拉松后，膝盖很疼。
用法提示：knees 是 knee 的复数形式，在句中作主语。
表示跪着的状态或求饶。
He was on his knees looking for the ring.
他跪在地上寻找戒指。
比喻用法，意为使某人或某组织屈服或濒临崩溃。
The crisis brought the company to its knees.
这场危机使公司陷入困境。
描述突然跪下的动作。
She fell to her knees and begged for forgiveness.
她跪下请求原谅。
日常用knee即可，knee joint更常用于医学或解剖学语境
grammar · medium
易错句子I have a pain on my knee.
正确表达I have a pain in my knee.
英语中表示身体部位内部的疼痛时，通常用介词in，而不是on。膝盖是关节内部疼痛，所以用in。
grammar · medium
易错句子He got down on his knees to propose.
正确表达He got down on one knee to propose.
英语中，单膝跪地（on one knee）表示求婚，双膝跪地（on both knees/on his knees）表示乞求或尊敬。注意膝盖数量的区别。
knee指膝盖（膝关节），elbow指肘部（肘关节）；两者均为关节但部位不同。
弯曲膝盖
You should bend your knees when lifting heavy objects.
举重物时应弯曲膝盖。
跪下
He got down on his knees to pray.
他跪下祈祷。
膝盖受伤
The athlete suffered a knee injury during the game.
那名运动员在比赛中膝盖受伤。
膝盖疼痛
Many older people experience knee pain.
许多老年人经历膝盖疼痛。
膝盖无力
She felt weak knees after the long hike.
长途徒步后她感觉膝盖无力。
跪着
He was on his knees, scrubbing the floor.
他跪着擦地板。
使某人屈服
The economic crisis brought the country to its knees.
经济危机使这个国家屈服了。
跪着；处于绝望境地
He was on his knees begging for forgiveness.
他跪着请求原谅。
两腿发软（因紧张、激动等）
Seeing her again made me go weak at the knees.
再次见到她让我两腿发软。
膝盖骨连着大腿骨
In anatomy class, we learned that the knee bone connects to the thigh bone.
在解剖课上，我们学到了膝盖骨连着大腿骨。
膝盖深的水中，在海滩某处
We waded knee deep into the cool river.
我们涉入齐膝深的凉爽河水中。
发长 /iː/ 音 (如 see, free)
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.