高速
high-speed, rapid, express
訓練
training, drill, practice, discipline
教科書
textbook, coursebook, schoolbook
協力
cooperation, collaboration
強力
powerful, strong
吸収
absorption, suction, attraction
急速
rapid (e.g. progress)
真面目
serious, earnest
真っ赤
bright red, deep red, flushed (of face)
万一
emergency, unlikely event, by some chance, by some possibility