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an alkali metal
Alkali metals are very reactive chemically.
(chemistry) a chemical reaction
This chemical reaction is very dangerous.
extraordinary, unusual
I was amazed at his extraordinary talent.
very; extremely / exceedingly; tremendously
It is a very beautiful view.
emergency
Please press this button in case of emergency.
(chemistry) alkali (class of caustic bases)
In this chemical reaction, alkali is needed.
an alkaline earth metal
Alkaline earth metals are located in Group 2 of the periodic table.
chemistry (branch of natural science)
He is majoring in chemistry at university.
sex, gender / (grammar) gender
Education about sex is very important.
high, tall / superior / 高価い: expensive
This building is very high.
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