resonance
n.回声，反响
The opera singer's voice has very good resonance.
歌剧歌手的声音很有穿透力。
chafe
vt.擦热(rub, scrape)
Coarse fabric will chafe your skin.
粗糙的布料会擦伤你的皮肤。
friction
n.摩擦
Friction between two sticks can create a fire./The wheel has been expired due to friction.
两条棍儿相互摩擦可生火。/因为摩擦，轮子报废了。
thermodynamics
n.热力学
ventilation
n.通风(airing, air circulation)
declivity
n.下倾的斜面
dehydrate
v.(使)脱水(dry )
Her body had dehydrated dangerously with the heat.
因为热，她的身体严重脱水。
dilute
v/.稀释，冲淡(thin, weaken)
He diluted the wine with water.
他酒中兑了水。
clutter
n.混乱 v.使混乱(litter, disarray)
My office is filled with useless clutter.
我的办公室堆满了无用的杂物。
chaos
n.混乱(disorder)
Chaos and order are two phenomena in nature.
混乱和秩序是自然界的两种现象。
distillation
n.蒸溜
Distillaiion is used to produce pure water.
蒸馏用来生产纯净水。
centigrade
adj.摄氏的
Centigrade scale is used in most countries except the United States.
除了美国，大多数国家都采用摄氏温标。
thermometer
n.温度计
microscope
n.显微镜
The light microscope magnifies the object 1,000 diameters.
光学显微镜能把物体放大一千倍，
telescope
n.望远镜
electron
n.电子
ion
n.离子
neutron
n.中子
nucleus
n.核子
proton
n.质子
atom
n.原子