时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 When you go to the pet store to pick out a new puppy, one of the first questions you may be asked is whether you want a male or a female. And when your friends have a new baby the first thing you find out is whether it’s a boy or a girl. We may be familiar with the physical differences between male and female in humans and other mammals, but outside of the mammals, the terms “male” and “female” take on some very different meanings. Aristotle defined females as those who could produce life inside themselves and males as those who could produce life in others. But the eggs of some animals, such as fish, are fertilized 1 after they are laid so that the embryos 2 develop outside of both parents. In other animals, such as earthworms, each individual has both male and female reproductive organs. Animals with both male and female organs are called “hermaphrodites.”



v.施肥( fertilize的过去式和过去分词 )
  • The study of psychology has recently been widely cross-fertilized by new discoveries in genetics. 心理学研究最近从遗传学的新发现中受益匪浅。
  • Flowers are often fertilized by bees as they gather nectar. 花常在蜜蜂采蜜时受粉。
n.晶胚;胚,胚胎( embryo的名词复数 )
  • Somatic cells of angiosperms enter a regenerative phase and behave like embryos. 被子植物体细胞进入一个生殖阶段,而且其行为象胚。 来自辞典例句
  • Evolution can explain why human embryos look like gilled fishes. 进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样。 来自辞典例句
学英语单词
act of mercy
Adenophora verticillata
adm.
agammaglobulinemics
aggregative response
All-Ordinaries Index
Amchitka Island
amount of the original contribution
anr-pc
anterior radiocarpal ligaments
arrabbiata
arsenic-fast
auto increment addressing mode
Bacillus satellitus
bacterial speck
Belemnopteris
bic
blumpken
breaking test for chain cable
Brewster window
Canada Day
caudal medullary vestige
cecchettis
chenopodium glaucums
Chuvanayskiye Gor'y
classification of income
comb dresser
convergioscope
cooled shroud
cropping management factor
crucible holder
cruset
dense-graded mix
descending development method
difezil
diffusion of impurities
digital increment plotter
dilute medium
down sb's way
efferent limb block
fourth normal form
foveate
freak-out
friscoes
ground points
hartenberger
hartzog
have a sweet tooth
Hedyotis coreana
heterogeneous multiplexing
hysterophyte
installation risk
instruction classification
integrating ahead
Japanese rice ball
kehon odori (japan)
Kellyana
keyword density
king philip
lead-cadmium elimination roast
leaf cycle
liljeros
line-intercept
liquid blasting
lovelocked
mail bag
materfamiliases
milk ring test
monomorium minimums
mother's
multiple ultrasonic transducer combination
Newcomb theory
noncytoplasmic
nucleothymic acid
obtrectation
one-way controlled transmission
pan-fired
Panofsky, Erwin
panophthalmitis
Pirthipur
plagiorchis
playgames
Pontet-Canet
preselected trajectory
quilliam
resource sharing control
resuspensions
road pizza
roamings
Sabinas Hidalgo
scullery basin
shuttingdown
smsas-s
Tagore
test equipment tool
thin achromatic doublet
tooth plane
ursus thibetanus formosanus
vehicle repair depot
Victor Charlie
weak absorption