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Sentence

彼かれは研けん究きゅうに心しん血けつを注そそいでいる。

Span Details

研けん究きゅう

research; study; investigation

noun, suru verb

direction, time, indirect object, or target marker

心しん血けつを注そそい

put one's heart and soul into; devote oneself completely to

-> 心血を注ぐexpression, verb

ongoing or resultant state

-> ているgrammar