雪地上可以看到兔子的脚印。

We could see rabbit ___tracks in the snow.

我们沿着动物踩出的小径穿过灌木丛。

We followed the animal's ___track through the bushes.

父母用手机软件追踪孩子的实时位置。

Parents use an app to ___track their child's real-time location.

赛道因为下雨变得很滑。

The ___track became slippery after the rain.

这张专辑的第二首歌是我最喜欢的。

The second ___track on this album is my favorite.