'Historic' and 'historical' are easily confusable.

　　historic和historical容易攪混。

　　There is no evidence for such a historical personage.

　　沒有證據表明存在這樣一位歷史人物。

　　You must place these events in their historical context.

　　必須把這些事件同它們的歷史環境聯系起來看。