A. "Like knows like."译成"英雄识英雄."或"惺惺相惜"

B. "Her mother is a sister in a Melbourne hospital."译成"她母亲是墨尔本一家医院有个姐妹."

C. "Like charges repel; Unlike charges attract."译成"相同的电荷排斥,不同的电荷相吸."

D. "The mastery of a language is not easy and requires painstaking efforts."译成"语言这东西,不是随便可以学好的,非下苦功不可."