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橄欖石: olivine, peridot / 観覧席: spectator's seat, audience's seat
This volcanic rock contains a lot of olivine.
a mourning cloak (butterfly)
A mourning cloak is flying around the garden.
赤外線天文学: infrared astronomy
Infrared astronomy plays a very important role in the study of the universe.
曹灰硼石: ulexite
This museum exhibits a collection of rare ulexite.
an apophyllite
This beautiful apophyllite is part of my treasure collection.
a red junglefowl
He searched the forest to find a red junglefowl.
cumulonimbus
The cumulonimbus clouds floating in the sky indicate that a thunderstorm is near.
gemology
He is an expert in gemology, and he is good at evaluating the quality of diamonds.
(statistics) meta-analysis
We conducted a meta-analysis on this issue.
e-book
I often read e-books.
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