astronaut
加入词篮Cancer
orbit
revolution
chemistry
chemist
chemical
organic
acid
molecule
agent
metal
aluminum
bronze
copper
tin
nickel
zinc
crystal
transistor
particle
alloy
dilute
thin
concentrate
concentration
extract
condense
saturate
aluminum
nitrogen
react
gas
air
sky
solution
soluble
neutral
corrode
carbon
carbohydrate
oxygen
oxide
silicon
calcium
sulfur
hydrogen
mix
mixture
blend
physics
physicist
physical
science
scientific
scientist
experiment
experimental
electron
electronic
atom
energy
horsepower
matter
substance
material
heat
calorie
radiate
radiant
emit
radioactive
nucleus
split
detach
segregate
move
movement
mobile
motion
rotary
revolve
whirl
roll
spin
turn
rotate
alternate
coil
stable
stability
static
steady
still
yet
already
nevertheless
nonetheless
