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(mathematics) pure mathematics
He is passionate about researching pure mathematics.
(idiomatic, especially a child) to be on the verge of tears
Whenever he fails, he always sulks.
stairs used in emergencies
Please use the emergency stairs in case of a fire.
state of emergency (unusually difficult or dangerous situation)
Due to the earthquake, the city declared a state of emergency.
state of emergency (governmental decree)
The government declared a state of emergency to prevent the spread of the new coronavirus.
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DiQt（ディクト）
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