Englishfor English speakers
strength
Noun
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If you have strength you are strong.
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#If you have strength your muscles are very powerful.
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#:I don't have the strength to lift something that heavy.
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#Strength can also mean you are strong or tough is some other way, such as a strong mind or strong will.
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#:She needed great strength to deal with her sickness and poverty.
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A strength is a good quality.
The plan had may strengths, such as not needing many people and being easy to do.
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Strength as in the number of something.
The strength of the regiment was 3,000 soldiers.
of
Preposition
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Made using.
It is a house of cards.
insulation
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noun
the state of being isolated or detached
the insulation of England was preserved by the English Channel
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noun
the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity
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noun
(= insulating material)
a material that reduces or prevents the transmission of heat or sound or electricity