音标：[juә'riә] ；

n. 尿素
[化] 脲; 尿素

n. the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics

词型变化：名词复数形式 : ureas

词性分布：

名词100%

urea的用法和样例：

例句

用作名词(n.)

A kidney also takes urea and mineral salts out of the blood.肾还排出血液中的尿素和无机盐。
Sweat consists of water with small amounts of urea and salts.汗液是由水和少量尿素和盐构成的。

词汇搭配

acetylene urea乙炔脲
alkyl urea烷基脲
urea nitrate硝酸尿素,尿素化硝酸...
urea cycle尿素循环
urea peroxide过氧化脲
butyryl urea丁酰脲
urea clearance尿素廓清率,尿素清除...
ethylene urea亚乙基脲
ethylmercuric urea乙汞脲(杀菌药)...
malonyl urea丙二酰脲,巴比土酸...
urea resin脲醛树脂,尿素树脂,...
urea adduct尿素加合物
dibutyl urea二丁脲
acetyl urea乙酰脲
urea formaldehyde尿素甲醛
urea agar尿素琼脂
urea herbicide尿素除草剂,尿素类除...
urea nitrogen尿素氮,脲氮...
butyl urea丁脲
benzoyl urea苯甲酰脲

【近义词】

carbamide[化]尿素

美国科学60秒 SSS 2012-10-16

Pet turtles can be unsanitary. But Chinese soft-shelled turtles really up the ante on distasteful behavior. They perform a variation on urinationthrough their mouths. Most land-based vertebrates produce urine to get rid of water-soluble toxic waste,

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Scientific American(十)月

经济学人321:爬行动物的排尿可算是方便了

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经济学人科技系列

The Shepherd and the Bureaucrat

A bureaucrat was hiking when he came upon a shepherd tending a large flock. The bureaucrat took a fancy to the sheep and asked the shepherd, If I can guess how many there are, may I have one? The shepherd thought it unlikely the man would guess the e

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趣味英语

学个词Learn a Word 第983期 Bureaucracy

今天我们要学的词是bureaucracy。 Bureaucracy, 官僚。美国国防部长盖茨上周末公开对军方庞大的官僚体制提出批评。 Gates took aim at what he called a bloated bureaucracy, 他还保证要亲自过问，精简军方的官

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英语单词荟萃

大众拟用催化转化器修复受影响汽车

Volkswagen has devised a new catalytic converter that could fix the majority of the cars in the US affected by the diesel emissions scandal, as details emerge of its attempts to satisfy regulators. 大众汽车(Volkswagen)设计出一种新的催化转

发表于:2019-02-08 / 阅读(203) / 评论(0)

英语新闻

VOA标准英语10月-Conflict Resolution Marked Career of Nobel Laurea

Conflict resolution marked the career of former Finnish president Martti Ahtisaari who has received this year's Nobel Peace Prize for his efforts to secure peace in various regions of the world. In this report from Washington, Senior Correspondent A

发表于:2019-02-12 / 阅读(178) / 评论(0)

VOA标准英语2008年（十月）

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学英语单词

3-hydroxycyclohexene

Abram-man

abseiled

acoustic interferometer