by comparison with adv.与...比较
强调相同点,即相差不大.
by contrast with 和...成对照； 和...比起来
by contrast对比起来,相比之下.
例子：By contrast,Mary is much diligent than Tom.相比之下,玛丽比汤姆勤奋得多.
常用短语in contrast with/to和……形成对比,比较起来,后面接名词.
in contrast with 和...形成对比〔对照〕