雪地上的脚印是动物经过留下的痕迹。

The footprints in the snow are ___markings left by passing animals.

包装上的标记说明了产品的保质期。

The ___markings on the package show the product's expiration date.

老师正在批改我们的期中考试卷。

The teacher is ___marking our mid-term exam papers.

斑马独特的条纹帮助它融入草原环境。

The zebra's unique ___markings help it blend into the grasslands.