时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 Sometimes it’s easy to understand how an evolutionary 1 change took place, but it’s more difficult to understand why. For example, consider the beautiful birds of paradise which live in the forests of New Guinea. The males of many bird-of-paradise species have evolved colorful plumage, used for dramatic courtship displays. How this plumage evolved is no mystery: The healthiest males usually have the most spectacular plumage, so females choose whichever male has the gaudiest 2 feathers. With this criterion, it’s not surprising that male plumage would grow more and more elaborate over the generations. Understanding WHY the plumage evolved is a little trickier 3. After all, there are some bird-of-paradise species that are really quite drab. These birds devote most of their energy to finding food and raising their young, instead of wasting it on courtship. What makes these near neighbors so different?



adj.进化的;演化的,演变的;[生]进化论的
  • Life has its own evolutionary process.生命有其自身的进化过程。
  • These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
adj.花哨的,俗气的( gaudy的最高级 )
  • The witch doctors were bedizened in all their gaudiest costumes. 女巫医穿上她们最绚丽的衣服,打扮得俗不可耐。 来自辞典例句
adj.狡猾的( tricky的比较级 );(形势、工作等)复杂的;机警的;微妙的
  • This is the general rule, but some cases are trickier than others. 以上是一般规则,但某些案例会比别的案例更为棘手。 来自互联网
  • The lower the numbers go, the trickier the problems get. 武器的数量越低,问题就越复杂。 来自互联网
学英语单词
absorption cross section
Acipenser schrencki
and the like
antibouncer
archaeological
Arif, Abdul Rahman Mohammed
back date
Balaing
binarite (marcasite)
Bona fide buyer
boxed processor
branch statistics
brendle
bronchial glands
brunost
call lamp
chemical anthropology
closes up
contract microbrew
court of equity
decibel (db)
direct firing system
direct-current telegraphy
drag anchor
duple ratio
electrodynamic vibration machine
ellesmerian
empirical school of management
eneida
energy-conscious
eustyles
excise duties
extraction gravimetric method
freedom of commerce
gasp in admiration
gbp
green parties
head tenon
heat quality
hemimellitic acid
indium hydrogen sulfide
Jackson's epilepsy
La Ferté-Vidame
language lab
lemon-juice
light show
liquid phase extraction
little monkey
magnetic bubble memory (mbm)
maneuvering propeller
maritimes
mauritane
monostyla closterocerca
morainal apron
n-hexylaldehyde
nascent protein
non-functional compound
NOT STRICT
nudas
optimum turn
other optical fiber measurement equipment
overflow attribute
oxalacetic ester
permissible lamp
photobeat
planeness of flange
planting system
plateau gravel
pneumatic liquid density gage
Poupart's line
praam
primary processes
production
pulse build-up time
quiero
railway bureau
regulator cover gasket
reversal nozzle
reverse swing door
ronghage
room temperature control system
safety goals
sand handling
scab union
seal pouring
self-scheduled algorithm
semiconductor barium titanate
serially linked reservoir
Shijǒng
silage combine harvester
single-bed room
sorbitan monolaurate
spade bolt
spark plug tester
sphygmophones
staiver
Tibenzatum
trivialities
ungreases
venit et defendit
ventrolateral compartment
Virus software