関連ワード:
is it harder to learn japanese or chinese is it hard to learn japanese and chinese at the same time is it hard to learn japanese for chinese speakers is it easier to learn japanese or mandarin is it easier to learn japanese from english or chinese is it easier to learn korean or japanese or chinese is it easier to learn japanese after chinese which language is harder to learn japanese or chinese which one is harder to learn japanese or chinese is it hard for japanese to learn chinese
