你膝盖上那块淤青是怎么弄的？

How did you get that ___bruise on your knee?

事故后，她腿上有多处割伤和淤青。

After the accident, she had several cuts and ___bruises on her legs.

那个孩子从自行车上摔下来后，身上满是淤青。

The child was covered in ___bruises after falling off his bike.