An instructor in chemical warfare asked soldiers in his class: "Anyone knows the formula for water?""Sure. That's easy," said one man."What is it?""H, I, J, K, L, M, N, O.""What, what?" reasked the instructor."H to O," explained the chemistry expert.
生化戰爭課的老師在課堂上問士兵們：“誰知道水的分子式?”“當然，太簡單了。”一個士兵回答道。“是什麼?”“H, I, J, K, L, M, N, O.”“什麼，什麼?”老師又問道。“H to O，”化學專家解釋道。