hydrogen
Произношение: [ˈhaɪdrəˌdʒɛn]
Слово
Контекст: «science»
(noun) a chemical element that is the simplest and lightest. It is a gas that you can't see or smell, and it is important for making water and other things.
Пример
Hydrogen is used in rockets to help them launch into space.
Пример
There aren't any hydrogen atoms in pure gold; it's made up of heavier elements.
Пример
What would happen if there were no hydrogen in water?
Контекст: «energy»
(noun) a source of fuel that can be used to create energy. It can run cars and other machines without polluting the air.
Пример
Many scientists are researching hydrogen as a clean energy source for the future.
Пример
Using hydrogen was not a popular choice in the past compared to oil and gas.
Пример
How can hydrogen be used to make energy for our homes?
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