かつてそれら大変有用でした。
Sentence Analyzer
English Translation
Once they were very useful.
Furigana
かつてそれら大変 有用 でした。
Romanji
Katsute sorera taihen yūyō deshita.
Words
嘗て
(かつて、かって)
once; before; formerly; ever; former; ex-; never yet; never before; first time; still not happened
其れ等
(それら)
those (near the second person)
大変
(たいへん)
very; greatly; immense; enormous; great; serious; grave; dreadful; terrible; difficult; hard; major incident; disaster
有用
(ゆうよう)
useful; helpful
デス
(デス)
death