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schoolyard
The children are playing in the schoolyard.
an attack dog
He keeps an attack dog to protect his house.
auditorium
We attended the school assembly in the auditorium.
crime scene
The police collected evidence from the crime scene.
unary operator (operator taking one operand)
A unary operator operates on one operand.
public work
He spends a lot of time on public works.
skin effect (tendency of alternating current to distribute itself)
Due to the skin effect, the current mainly flows on the surface of this wire.
spectroscopy (scientific study of spectra)
Spectroscopy is an important means of investigating the properties of matter.
spectrometer
You can use a spectrometer to examine the composition of a substance.
Kyūjitai form of 人口学: demography
Demography is a branch of social science that studies the structure, distribution, and changes in human population.
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