検索内容:
an unused item
This is my unused camera.
virgin, maiden
She is still a virgin.
innocent, inexperienced
She is still an innocent girl, with a pure heart.
something that has never occurred before; unprecedented
This is an unprecedented crisis.
unprecedented
(biology) cell biology
Cell biology is the study of the structure and function of cells, which are the basic units of life.
(ecology) biodiversity
We have a responsibility to protect the biodiversity of the Earth.
marine biology
I am very interested in marine biology.
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