math&geo
指数
exponent
(n) countries in Central and South America influenced by European cultures (mainly Spain, France, and Portugal)
Latin America
the belief in or worship of more than one god.
polytheism
the joint that has one bone remain still and another bone rotates around the still one
pivot joint
protein that can speed up chemical reaction
enzyme
系数
coefficient
the distance north or south from the equator
latitude
a pictorial symbol for a word or phrase
pictographs
the muscle that has smooth appearance and exists in many organs, such as stomach
smooth muscle
the fingerlike projections covering the surface of the small intestine to increase the surface for absorption
villi
次数
degree
(n) a Spanish conqueror (military victor) of Central and South America in the 16th century
conquistador
wedge-shaped characters used in the ancient writing systems of Mesopotamia
cuneiform
the first part of the small intestine where most chemical digestion happen
duodenum
the pigment that produced by the cell in the epidermis to protect skin and give it color
melanin
因式分解
factor
the plants and animals that depend on each other and their environment for survival
ecosystem
a person who copies out scribe
scribe
the joint that can rotate in nearly all directions
ball-and-socket joint
the muscle that cannot be controlled consciously
involuntary muscle
多项式
polynomial
a place's location when compared to somewhere else
relative location
an extensive group of states or countries under a single supreme authority, formerly especially an emperor
or empress.
empire
the joint that moves back and forth
hinge joint
the digestive liquid produced by liver
bile