oak gall
A gall produced by an oak by a wasp larva.
(organic chemistry) A particular berberine alkaloid
A seabird of the species Phalacrocorax carbo.
The quality of being countercyclical.
博物学者は枝に付いたナラの虫こぶを慎重に採取し、中のハチの幼虫を調べた。
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