kidney
n. either one of a pair of organs in the dorsal region of the vertebrate addominal cavity， functioning to maintain proper water and electrolyte balance， regulate acidbase concentration， and filter the blood of metabolic wastes， which are then excreted as urine 肾，肾脏
of the right kidney 合适的，相宜的，气质对头的/of the same kidney 气质相同的；同一类型的
Blacks are statistically less likely than whites to be referred for kidney transplants or earlystage cancer surgery.
据数据统计显示，相对于白人而言，黑人更少接受肾移植和早期癌症治疗等复杂手术。(2006年6月阅读理解)
kit
n. all the equipment of a soldier 成套工具(用品) sailor or traveler 工具箱(包) vt. to supply with necessary things 装备
golfing kit 高尔夫球用具/a firstaid kit 急救包/a carpenter s kit 一套木工用具/a tool kit 工具箱/a travel kit 一套旅行用品/kit sb.out with sth.以某物装备某人
He is carrying a carpenter s kit.
他带着一套木工用具。
knit
v. to make by uniting threads into a kind of close network by mean of long needles 编织 to unite or join closely 接合，粘合 to show one s displeasure， worry， or deep thought by frowning 皱眉
knit up 打好，织好，织完/knit one s (the) brows 皱眉头/knit broken bones 使折骨愈合
They spent their spare time knitting socks and sweaters.
他们用编织袜子和毛衣来消磨闲暇时间。
knock
v. to produce by hitting or striking 敲，敲打，敲击 n. an instance of striking or colliding； a blow 敲击，碰撞
Sometimes I think this house will be knocked down by a passing plane.
有时我觉得这房子会被过往的飞机撞塌。