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bun    音标拼音: [b'ʌn]
n. 小面包

小面包

bun
n 1: small rounded bread either plain or sweet [synonym: {bun},
{roll}]

Bun \Bun\, Bunn \Bunn\, n. [Scot. bun, bunn, OE. bunne, bonne;
fr. Celtic; cf. Ir. bunna, Gael. bonnach, or OF. bugne tumor,
Prov. F. bugne a kind of pancake; akin to OHG. bungo bulb,
MHG. bunge, Prov. E. bung heap, cluster, bunny a small
swelling.]
1. any of a variety of slightly sweetened or plain raised
cakes or bisquits, often having a glazing of sugar and
milk on the top crust; as, a hot cross bun.
[1913 Webster PJC]

2. a type of coiffure in which the hair is gathered into a
coil or knot at the top of the head.
[PJC]

3. pl. the buttocks. [slang]
[PJC]


BUN \BUN\ n. [acronym] (Med.)
same as

{blood urea nitrogen}; the concentration of nitrogen in blood
present in the form of urea; -- used as a measure of
kidney function.

Note: Blood usually contains 10 to 15 mg of nitrogen per 100
ml in the form of urea. --Stedman.
[PJC]


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  • Blood Urea Nitrogen (BUN) Test: High vs. Low Levels, Normal Range - WebMD
    Your doctor may order a blood urea nitrogen test, also known as BUN test, to see how well your kidneys are working Find out more from WebMD
  • Blood urea nitrogen (BUN) test - Mayo Clinic
    A BUN test measures the amount of urea nitrogen that's in your blood Here's how your body typically forms and gets rid of urea nitrogen: Your liver produces ammonia — which contains nitrogen — after it breaks down proteins used by your body's cells
  • Blood Urea Nitrogen (BUN): Testing, Levels Indication - Cleveland Clinic
    The blood urea nitrogen (BUN) test measures how much urea nitrogen is in your blood BUN levels vary High levels may indicate kidney damage
  • What Happens If My Blood Urea Nitrogen (BUN) Is High
    BUN measures the amount of urea nitrogen in your blood Your liver makes urea after the breakdown of proteins, as covered by researchers at the University of Rochester Your kidneys normally filter this out, but elevated levels can signal a problem Normal BUN levels usually range from 6 to 24 mg dL
  • Blood urea nitrogen (BUN) test for kidney disease
    What is BUN? Your blood urea nitrogen (BUN) level is based on a blood test that measures the amount of urea nitrogen in your blood Urea nitrogen is a waste product that your body makes after it breaks down protein Healthy kidneys take urea nitrogen out of your blood When your kidneys are not working well, your BUN level goes up
  • BUN (Blood Urea Nitrogen): MedlinePlus Medical Test
    What is a BUN (Blood Urea Nitrogen) Test? A BUN, or blood urea nitrogen test, measures the amount of urea nitrogen in your blood Urea nitrogen is a waste product that forms as your body breaks down proteins It's carried in your blood and then removed by your kidneys when you urinate (pee)
  • BUN level for kidney failure: What to know - Medical News Today
    According to the Centers for Disease Control and Prevention (CDC), a healthy BUN level ranges from 7 to 20 milligrams per deciliter (mg dL) A BUN level higher than 20 mg dL may indicate





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