methane
methane — noun
1. a colourless, odourless gas that is highly flammable and forms the largest part
a colourless, odourless gas that is highly flammable and forms the largest part of natural gas, which homes use for heating and cooking
The village uses methane from local farms to heat its school and hospital.
collocation: methane from [source]
Hao installed a methane detector in the basement after noticing a gas smell.
collocation: methane detector
Cows release large amounts of methane into the atmosphere every year.
When dead plants rot under water, methane bubbles up from the swamp.
- natural gas
a broader term for the mixture of gases (mostly methane) that comes from underground and is used for heating
- marsh gas
an old-fashioned name for methane produced in swamps by rotting plants
用法筆記
Methane is an uncountable noun — you cannot say 'a methane' or 'two methanes'. It is often discussed in connection with climate change, farming, and renewable energy.