时间:2018-12-24 作者:英语课 分类:2014年Scientific American(一)月


英语课

 The warm waste environment of your mouth makes it a great place for bacteria, some of which keep busy causing cavities. Such dental difficulties were thought to a really taken-off for we switch from hunting gathering 1 to agriculture and had a ready supply of farmed fermentable 2 carbohydrates 4.


 
Now research shows that at least some pre-agricultural humans also had a bad case of tooth decay. The study is in the proceedings 5 of the National Academy of Sciences.
 
One hundred gatherers resided in Morocco called GlutoPeijohn was a key ritual and economic center. The deposits there date to some 15,000 years ago and are incredibly dry, so organic material, including bones and chart plan remains 6 are well preserved.
 
Researchers found leftover 7 panmites junifer, perstashio, wild oats, and particularly popular carbohydrate 3 reach icornts, eaten and raw or as flour, yicornts can sticken in teeth. The food stuff makes a happy home for acid-loving bacteria that cause cavities.
 
The scientists also analyzed 8 teeth from 52 partial or complete jaws 9. They found that more than half the teeth showed signs of lesion and only three of the adults were cavity-free, thousands of years before folks in the area learned to farm.

1 gathering
n.集会,聚会,聚集
  • He called on Mr. White to speak at the gathering.他请怀特先生在集会上讲话。
  • He is on the wing gathering material for his novels.他正忙于为他的小说收集资料。
2 fermentable
adj.可发酵的,发酵性的
  • We will discuss fermentable fiber more in Part 5 of this series. 我们将会在这系列的部份5讨论沸腾的纤维更多。 来自互联网
  • The conditions of fermentable and enzymatic conversion of M14 were optimized. 对高活性突变株M14的细胞转化和发酵转化条件进行优化。 来自互联网
3 carbohydrate
n.碳水化合物;糖类;(plural)淀粉质或糖类
  • You should not have too much carbohydrate in your diet.你日常饮食中不该有过多碳水化合物。
  • Cashew nuts are rich in carbohydrate.腰果含丰富碳水化合物。
4 carbohydrates
n.碳水化合物,糖类( carbohydrate的名词复数 );淀粉质或糖类食物
  • The plant uses the carbohydrates to make cellulose. 植物用碳水化合物制造纤维素。 来自《简明英汉词典》
  • All carbohydrates originate from plants. 所有的碳水化合物均来自植物。 来自辞典例句
5 proceedings
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
6 remains
n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
7 leftover
n.剩货,残留物,剩饭;adj.残余的
  • These narrow roads are a leftover from the days of horse-drawn carriages.这些小道是从马车时代沿用下来的。
  • Wonder if that bakery lets us take leftover home.不知道那家糕饼店会不会让我们把卖剩的带回家。
8 analyzed
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
9 jaws
n.口部;嘴
  • The antelope could not escape the crocodile's gaping jaws. 那只羚羊无法从鱷鱼张开的大口中逃脱。
  • The scored jaws of a vise help it bite the work. 台钳上有刻痕的虎钳牙帮助它紧咬住工件。
学英语单词
affrayed
and so say l
antitack agent
armor-piercing tracer
ascending chain condition for left ideals
aural signal
ballast pressure
basic wind speed
Bebensee
benzoporphyrin
between the cup and the lip
binilbium
cathodolumine-scence
circular-nut
cleavage trace
collection of data
coon-ass
cradle-to-grave
critical appraisals
cutaneous respiration
data item separator
deflection angle
dipropyl ether
Do you speak English
emetic reflex
eucalypt ovatas
extill
field mice
flapless
foreign debit balance
full-duplex communication
gamma irradiation
general equilibrium noise
genus fumarias
give ... in
Glycoasparagine
goat willows
hacker attack
helical-lobe compressor
homogeneity postulate
hot air spraying
hubel
hydraulic pile driver
Ibbison
ideology
inside edged
internal and external snap gauge
jim-jams
Jinglun
Klein's liquid
Komandorskie Islands
Lacedaemonian
language-learnings
lead lag network
light-o'-loves
line dislocation
marbled ray
marker beacon
Maydl's operation
motets
mushroom button
nondeniable
Novacrysin
palinodial
Parmellaceae
pat-a-cake
pelizaeus
Pelton wheel
phase change coefficient
piezoelectric matrix
plunkers
pyrectics
raipurs
safety thermal relief valve
salient pole type
San Simeon Point
sand dune deposit
scintillating liquid
sebastianas
self-check code
sell on strength
Shapkino
shim range
silica glass-vitreous silica
singing along
space biophysics
standard frequency and time signal satellite service
stridulating organ
stylohyals
super-slick
texta
three-wire watt-hour meter
tied edge forms
to emerge
train in
two way make before break contact
updating technique
vapor compression heat pump
Wabigoon L.
wagatsuma
whigging
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