老师用红笔在错误的地方做了标记。

The teacher ___redlined the mistakes with a pen.

他将跑车推到极限，让发动机达到红线转速以测试其性能。

He pushed the sports car to its limit and ___redlined the engine to test its performance.

该银行因对低收入社区实行信贷歧视而受到批评。

The bank was criticized for ___redlining low-income neighborhoods.