148150 しゅう週に３じかん時間のべんきょう勉強ではひと１つのげんご言語をしっかりおぼ覚えるのにじゅうぶん十分ではないだろう。 Studying three hours a week wouldn't be enough to learn a language well. — Tatoeba Discussions Log in to talk about this sentence.