the formula for water
水的分子式
teacher: what the chemical formula for water is the?
老师：水的分子式是什么？
blonde: hijklmno!!
花瓶：hijklmno！！
teacher: what are you talking about?
老师：你在说什么？
blonde: yesterday you said its h to o!
花瓶：昨天你不是说h to o吗？