...At seed-time their depredations are yet more serious, as they nowcome in not simply for a share of the produce, but undermine thevery foundations of the future crop... 
Rev. C. A. Johns 「British Birds in their Haunts」
...The Water-rats, or Voles, eat fishes, frogs, and toads, besides otherfood, and do infinite mischief to banks and dams, which they undermine...
R. Lee 「Anecdotes of the Habits and Instinct of Animals」
...This would undermine the Church...
Mark Twain (Samuel Clemens) 「A Connecticut Yankee in King Arthur’s Court, Complete」
...They can undermine such cliffsindeed, and then grind the fragments to powder, but their direct actionis limited...
Oliver Lodge 「Pioneers of Science」
ランダム例文：
便利！手書き漢字入力検索
時事ニュース漢字 📺