血管: blood vessel / 欠陥: defect / 欠巻: lack of the volume (of a large volume of documentation, like an encyclopedia) / 結巻: last volume (of a large volume of documentation, like an encyclopedia)

結果: result / 欠課: cutting class / 決河: river breaking through

欠課: cut class

speciality/specialty; subject of study; subject of expertise; area of interest; profession

(rare) bear fruit

(education) cutting class, skipping class, being absent from class

to cut class, to skip class, to be absent from class

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend