塵も積もれば Even Dust when Piled...

塵も積もれば、山となる Even Dust, When Piled up, Will Become a Mountain.

毎日、英単語をひとつずつおぼえよう。ちりも積もれば、山となるというからね。
mainichi, eitango o hitotsu zutsu oboeyou. chiri mo tsumoreba, yama to naru to iu kara ne.
Learn one English word each day. As they say, even dust when piled up becomes a mountain.

毎日 mainichi—every day
英単語 eitango—English word
を o—direct object marker
ひとつずつ hitotsu zutsu—one by one
おぼえよう oboeyou—Volitional form of 覚える oboeru meaning "Let's learn"; memorize, learn
というからね to iu kara ne—'As they say'