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jackhammer (portable percussive drill device) / any other type of rock drill
He was repairing the road using a jackhammer.
Alternative form of 削岩機
This rock drill is very efficient and can quickly cut through rock.
(petrology) breccia
This area is rich in breccia.
(petrology) gabbro
This area is rich in gabbro.
(petrology) diorite
This mountain is made of diorite.
microbiology
I am majoring in microbiology at university.
xenobiology (speculative biology of extraterrestrial life)
Astrobiology is a very interesting field of study.
Kyūjitai form of 微生物学 (“microbiology”)
paleontology
He is an expert in paleontology.
aerobiology
He is an expert in aerobiology, engaged in the study of microorganisms in the atmosphere.
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