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(astronomy) the Milky Way
We are a part of the Milky Way.
dating website
He found her on a dating website.
(astronomy) the Solar System
The Solar System is composed of eight planets, including Earth.
a system of measurement
In this experiment, we will use the International System of Units.
the meridian system
He is deeply involved in the study of the meridian system.
coordinate system
We use this coordinate system to locate the position of an object.
inertial frame of reference
In physics, the inertial frame of reference is a very important concept.
Kyūjitai form of 体系: system; organization
This system is very complex.
state of emergency (governmental decree)
The government declared a state of emergency to prevent the spread of the new coronavirus.
paleoecology
Paleoecology is a field of study that investigates the relationship between past organisms and their environment.
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