时间:2019-01-10 作者:英语课 分类:与美国小学生一起学英文第10册


英语课

 Proteins 蛋白质


What is protein? 什么是蛋白质?
It is one of the most important nutrients 1, animals need. 它是一种动物所需的最重要的营养物质。
People really need a lot of protein. 人们需要大量的蛋白质。
Protein helps a person to grow cells in muscles. 蛋白质有助于人们肌肉内细胞的生长。
Without protein, we cannot stay healthy. 没有蛋白质,我们就不能保持健康。
Eating protein is important. 食用蛋白质很重要。
However, we should not eat too much protein. 然而,我们不应该吃得太多。
Do you know why? 你知道为什么吗?
Because our bodies cannot store protein. 因为我们人体不能储存蛋白质。
Instead, our bodies change a new protein into fat. 相反,我们的身体会把新的蛋白质转化成脂肪。
Therefore, we must have a balanced diet. 因此,我们要有均衡的饮食。
Where do you think we can get protein? 我们从哪儿能获取蛋白质?
We can get protein from meat, fish and beans. 我们可以从肉类、鱼类和豆类中获取蛋白质。
They're major sources of  protein. 它们是蛋白质的主要来源。
 

n.(食品或化学品)营养物,营养品( nutrient的名词复数 )
  • a lack of essential nutrients 基本营养的缺乏
  • Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》
标签: 小学英语
学英语单词
ach-laut
adipocerous
Agapetes
agricultural society
ameriyah
aminooxy
analysis of debugger data
artificial fact
automatic gas chromatography
autosomal recessive
averch-johnson effect
ball transfer table
Benedict's solution/Benedict's reagent
Biakatu
block-shapeds
Bünzen
Castronuevo
catering truck
centrophorus acus
chlorophenyls
clapboarded
class-a amplifier
colleseed oil
conical equidistance projection
cut-in temperature
cyclic distribution
deodo(u)rant
dipropylurea
docu-mentaries
eccrine secretion(exocrine)
Edward Wong Credit Limited
embarker
employee retirement pension
Eusulbon
Fine Arts, Museum of
finger gauge
foreplan
form lining
glassco
greasinesses
higher-modulus counter
impregnated sleeper
interreciprocal digital network
Kosmynino
Laborder's sign
listeria septicemia
loss adjustment expense
medium density baler
mesocephalic hemianesthesia
mononeuron
multifigure
multitudinal
nicotinamide mononucleotide
Nikkei Stock Average
no matter what i do
nonquarter-wave stack
Olympically
one state push-down machine
organ transplant surgery
overshortening
passive branching device
percy
plant population
plashet
Plica hepatopancreatica
primodos
prohibitive duty
PSE (packet switch equipment)
pterygium transplantation
quinizarin sulfonic acid
ratio of gain
rationary
redisplay
regulating tube
remained
removal of conjunctival polypus
resectable
rondelay
runbacks
say in sport
scavenging the hole
single-wheel loading
skull-caps
snow-storms
starfield
sublogarithmic
supermposition
swim bladder muscles
testing of flexure
the size of
timarus
to kick off
touchwood
transformed clone
Trichostrongyloidiasis
twisting(cleland 1949)
two strikes
unified model of nucleus
viola adenothrix tsugitakaensis
wattless component of the current
word expert parsing
XMLHttpRequest