to include all this would swell the bulk of the book too much 意味

• これを全部収めるということになるとその本はあまりに大部になる

• include too much detail:    詳細｛しょうさい｝［細部｛さいぶ｝］を盛り込み過ぎる
• if it would not be too much trouble:    あまりご迷惑｛めいわく｝でなければ
• do too much of the same thing all the time:    始終同じことをやり過ぎる