时间:2019-01-22 作者:英语课 分类:自然百科2009年


英语课

 Miners in South Africa have found a white diamond about the size of a chicken egg. The diamond may be among the world's top 20 high-quality gems 2. It was discovered at the Cullinan mine, northeast of Pretoria.


 
Petra Diamonds Limited chief executive says the 507.55-carat gem 1 was of exceptional color and clarity. No official value has been given for the diamond, but the company’s Finance Director is quoted as saying it could be worth 20-million dollars. It weighs just over 100 grams.
 
The mine also produced the largest diamond ever found, the Cullinan, at 3,106 carats in the rough. That rough stone was cut into 9 large and 100 small finished stones. The largest of these is set in Britain’s Royal Scepter, which is part of the Crown Jewels.

n.宝石,珠宝;受爱戴的人 [同]jewel
  • The gem is beyond my pocket.这颗宝石我可买不起。
  • The little gem is worth two thousand dollars.这块小宝石价值两千美元。
growth; economy; management; and customer satisfaction 增长
  • a crown studded with gems 镶有宝石的皇冠
  • The apt citations and poetic gems have adorned his speeches. 贴切的引语和珠玑般的诗句为他的演说词增添文采。
学英语单词
.icm
accommodation quarters
aggregate life table
alloy cast-iron
anvil cinder
architectural aluminium profile production line
at the summit of
attain renown
bargain on term
best match
bioprosthetic
build upon
bustitutions
calves'-snout
cash to total assets ratio
consessive
cross-spectral den-sity
csc (containment spray cooling)
cutaneous carbolism
cy youngs
cybersport
deutzia discolor hemsl
discriminant by distance
dropping anchor
dynamic roughness
eclipse beginning
Fenural
field emissions
foam fractionation
fungous endocarditis
garagey
garant
Gov.-Gen.
green coffee
hack-driver
have one's wind taken
homeward journey
hugeously
hyalitis punctata
increasing waves
inflatable structure
international mile
Izaac
like a bull at a five-barred gate
lineated
Linslade
macro implementation
Methyldinitrobenzamide
molybdenum blue reaction
monetary expression
monoallkyl arsine
msy
multilocular fat
natrium malicum
Net User
nmrg
non-freezing
Oaths and Declarations Ordinance
one way input tape
overtalk
Pampa Grande
parametric estimation filtering
parapenaeopsis cornuta
pathogenesis of stomach disease
paving with pebbles
percolation clay
Philip IV
pholiota namekoes
pseudonormed
Purdy
quatibrach
racemase
recovery routine
request segment
resistance stabilized oscillator
rigid gear
ringspot viruses
Rubus suzukianus
ruffo
Sandomigran
screw-together fitting
seborrheid
Secretary of Party Committee
Siberian pea tree
sitarists
substitutional mixed crystal
system's real-time clock
T-hinge strap
T.C.H.
tapping fit
Theory of International Comity
thin-sliceds
ting-a-ring
to be all over with a person
trans-boundary
tunneling method
unsportsmanly
vapour phase nitration
veneer guillotine cutter
voltage stress protection
WiFi hotspot
yaw stiffness