検索内容:
重水素: heavy hydrogen
Heavy hydrogen is one of the isotopes of hydrogen.
thirty-seven; 37
It is thirty-seven kilometers to my house.
deuterium; heavy hydrogen
Deuterium is one of the isotopes of hydrogen.
素数: prime number (natural number)
He is doing research on prime numbers.
a prime number
A prime number is a number that cannot be divided by any number other than 1 and itself.
seventeen; 17
My younger sister is seventeen years old.
seventy; 70
My grandfather is seventy years old.
酸素: oxygen
We need oxygen to live.
three, 3 / third
He ate three apples.
散弾銃, 霰弾銃: shotgun
He entered the forest with a shotgun.
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