他们的经济大幅扩张，而我们的经济，相比之下，却衰退了。

Their economy has expanded enormously, while ours, ___by ___contrast, has declined.

她相当矮，与她高挑的姐姐形成对比。

She's quite short, ___in ___contrast to her tall sister.

相比之下，电视是一种更被动的活动。

TV, ___by ___contrast, is a more passive activity.