The strength of an acid is measured by its ability to donate a proton, and the strength of a base by its ability to accept a proton.
酸的強(qiáng)度由其提供質(zhì)子的能力來衡量，堿的強(qiáng)度由其接受質(zhì)子的能力來衡量。
"You can't go back and change the beginning, but you can start where you are and change the ending."
你無法回到過去改變開頭，但可以從現(xiàn)在開始改變結(jié)局。