薄层砂岩

The rock called sandstone is made up of a great many grains of sand. The beating of the rain on this rock washes the grains apart, and so the hard sandstone slowly changes into loose sand. 砂岩主要由大量沙粒组成。当雨水打下来的时候

发表于:2018-12-07 / 阅读(93) / 评论(0) 分类 英国学生科学读本

The Strange and Beautiful World of Arches National Park 犹他州拱门国家公园:奇怪而美丽的世界 This week on our national parks journey, we travel to Utah. The western state is home to several of the most popular national parks in Americ

发表于:2018-12-16 / 阅读(151) / 评论(0) 分类 2016年VOA慢速英语(十)月

文本: Finally, a fish breaks for cover. It's what the sea lions have been waiting for. Crevices in the reef might seem to offer shelter. But that's no problem for the sea lions, who simply scare them out with bubbles. With the sea lions distracte

发表于:2019-01-21 / 阅读(102) / 评论(0) 分类 跟着英剧练发音

Lesson 50 Only A Stone 第50课 只是一块石头 What is the oldest thing you have seen? One boy thinks it is a church, for he has seen a date on one which tells that it was built hundreds of years ago. 小朋友,你见过的最古老的东西是什

发表于:2019-02-13 / 阅读(108) / 评论(0) 分类 英国学生科学读本
学英语单词
accounting entry
aligning plug
amputated propeller
anticomplement
aquapulper
Balloch
blind main pipe
bossey
Braddon, Mary Elizabeth
c-mycs
centralized instrument panel
circulating flow
clawer
Coming events cast their shadows before .
consumption-led
conversion of profit into average profit
copyright work
creepages
cutaneous nerve
Dammfleth
data requirement language
decatur l.
deep-etch method
drill spindle support
durol
electric remote
electromagnetic oven
electromagnetic vulnerability (emv)
enjoy yourself
equated call
event management
exchange frequency
finned-tube
flow gaging weir
flush of dawn
geostrophic
gi bleeding
grievance
Grolier
guiding field
halakhist
highpoint
horked
hypercomputations
iced firn
improved variety improved breed
Jangamo
Jewish Alps
jirk
juridical practice
juvenesence
lizelle
long-term departure
lower-level vision
lushes
master production plan
MCI-154
meson beam
mid-atlantic
Miziya
monogamous species
morphographic map
MVNO
mycin
nitrogen mineralization
nozzle cross-section
nuptses
oil return tube
on the ___ front
Ovarid
Palmarin
Pardubice
perigraphic
poltical
profunctors
pulverized coal firing equipment
rated moment
receptarius
recruitment and selection
royal greenwich observatory (rgo)
scupper nail
scyliorhinidaes
self-concerns
Shankill Road
small bundle
sneaps
solar-assisted
soybean research personnel
superannuation funds
tamarixionol
Th B
three-in-one drawbar
threonine
to separate
Tyagaraja
Tyukalinsk
ullage engine
under-ripe
Wainwright Air Force Base
warning signals
welding hull structure
worm families