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poverty line
He is only earning an income below the poverty line.
the brink of starving to death
He was on the brink of starving to death due to a lack of food.
(mathematics) asymptote
We need to calculate the asymptote of this function.
Synonym of X線 (ekkusu-sen, “X-ray”); a Röntgen ray
The doctor applied X-rays to my arm.
(attributive, geometry) collinearity
All of these points are on the same line.
copper wire
This electrical appliance is made of copper wire.
reticle; crosshair
He observed the stars using the reticle of the telescope.
(acoustics, physics) a sound ray, an acoustic ray
The study of sound waves is an important part of acoustics.
rough lines of a rough sketch
He began to draw the rough lines, creating a rough shape of the picture.
(geography) Antarctic Circle (one of the five major circles of latitude)
I started preparing to go to the Antarctic Circle.
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