...We saw a smaller kind of the same tree, named Molondo, the fruit of which is about the size of marbles, having a tender skin, and slight acidity of taste mingled with its sweetness... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...The causes of diarrhœa are dampness,undue acidity in the bowels, or the presence of irritating matter there...
Robert Jennings 「Sheep, Swine, and Poultry」
...Among other causes oftenmentioned are acidity of the blood, nervous derangement, microbes, andinjuries...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
ランダム例文：
admitting murmuring chatterbox
便利！手書き漢字入力検索
この漢字は何でしょう？？