英文關鍵字
probe
automatic
test
machine
tool
put
golden
metal
container
oil
product
laboratory
closeup
pour
table
yellow
round
process
crude
kazan
tatarstan
chemistry
sample
environment
discovery
energy
gasoline
science
liquid
black
chemist
chemical
petrol
analysis
petroleum
lab
fuel
power
methanol
diesel
element
experiment
study