时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

A 4 percent decrease in forest was associated with a nearly 50 percent rise in malaria 1 cases in western Brazil.


You know saving the rainforest is good for biodiversity. But it may also be a boon 2 to human health. That's because less clear-cutting may mean less malaria, according to a paper out this week in the journal Emerging Infectious Diseases.


Researchers looked at stats for 2006 from 54 health districts in western Brazil. The sites had more than 15,000 cases of malaria. The investigators 3 compared those cases to deforestation in the same health districts over the previous 10 years. They found that a loss of just four percent of forest cover was associated with nearly 50 percent more malaria cases. And malaria risk was highest five to 10 years after the jungle was cleared.


Not all mosquitoes carry malaria. But the human-loving species Anopheles darlingi does, and previous studies have shown that it thrives in disturbed areas. In fact, you're over 200 times more likely to find one of them biting you in a clearing than you are deep in the jungle, where other more benign 4 species compete with them for blood.


So how much clear-cutting is too much? We don't know yet—but an intact swath of rainforest appears to provide free public health services.

 



n.疟疾
  • He had frequent attacks of malaria.他常患疟疾。
  • Malaria is a kind of serious malady.疟疾是一种严重的疾病。
n.恩赐,恩物,恩惠
  • A car is a real boon when you live in the country.在郊外居住,有辆汽车确实极为方便。
  • These machines have proved a real boon to disabled people.事实证明这些机器让残疾人受益匪浅。
n.调查者,审查者( investigator的名词复数 )
  • This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
  • The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》
adj.善良的,慈祥的;良性的,无危险的
  • The benign weather brought North America a bumper crop.温和的气候给北美带来大丰收。
  • Martha is a benign old lady.玛莎是个仁慈的老妇人。
学英语单词
actual relative movement
alias dictus
alkali increase test
allchins
apl implementation
back to back duplex bearing
blastx
boscombes
boss-shot
brachychily
campbellii
care homes
coimmunostained
color-control monitor
come missing
copolymer of acrylate and butadiene
crustae
darters
dasyuruss
deepseated
dinkas
distinctive information
do better to
domestic sausage
downlink and uplink
eburnation of dentin
eCRM
employment interview
Engel curve analysis
environmental operability
extra filling
fail to do sth
fillet a la Duchesse
flash cuts
frockcoated
fully automatic diaphragm
ground-return system
ground-run
halarch sere
hardware-software interaction
Hemostasin
hypertrophic laryngitis
indigo bird
induced bundle
Joe college
Juvigné
klinometer
Lasegue's disease
law of large numbers
learning modules
listed output control
loop vent
maakite (hydrohalite)
megalokaryocyte
methyl-4-aminobenzene sulfonyl-carbamate
miss-ing
monumented
Musken's tonometer
Na'ām, Nahr
nervous stimulant poisoning
New School University
Ngerengere
Nup358
osteoplastic amputation
overbank
pantloads
pentadecagon
pentagonoid
pes planus
pkm
polygon fault
pre-drawing process
prefixing
preliminary centering
Pterynotus
pyrylium salt
Q. O. R.
Quingey
rare spring-sedges
RBFs
reawakened
representation raster image
resonant helix
rivu-
sheather
Spiraea media
Steingrimsfjardharheidhi
stroke someone the wrong way
stuck my neck out
surrenderer
tear around
Thanetian
thoughtform
unisexualis
vulcaite
warliness
wiring-saved apparatus
Wisteria chinensis
Your obedient servant