Substitutes replace main players during a break in play.

替补在暂停时替换场上主力。

youdao

In April, the government will implement a system that would replace the main means-tested benefits-- such as income and housing support -- with a single payment.

CNN: UK's poorest banking on food donations as austerity bites

The central idea is that when reading a story, you replace yourself as the main character.

FORBES: New Study Says We Take on the Traits of Our Favorite Fictional Characters

Syriza, which broke through to 17% in the May election, looks set to replace Pasok as the main opposition party.

BBC: Why young rural Greeks are set to embrace Syriza