Giải nghĩa:
Helium is a type of gas that is lighter than air and does not have color or smell. It's used to fill balloons and airships.
Ví dụ:
When you fill a balloon with helium, it floats in the air.
helium (noun)
/ˈhiːliəm/
Giải nghĩa:
In scientific terms, helium is a type of chemical element. Its symbol is 'He' and atomic number is 2.
Ví dụ:
Helium is the second element on the periodic table, after hydrogen.
Cách sử dụng
Helium is a gas that is lighter than air. It is often used to fill balloons, so they float in the air instead of falling to the ground. Helium is also used in things like airships and medical equipment. When talking about balloons or things that float, you might hear people mention helium.
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