The child left a footprint on the freshly cleaned floor.

孩子在刚清洁过的地板上留下了足迹。

It was a footprint—the footprint of a man!

那是一个脚印——一个人的脚印！

You can't leave a footprint that lasts if you're always walking on tiptoe.

如果你总是掂着脚走路，就无法留下长存的足迹。

Many people will walk in and out of your life, but only true friends leave a footprint in your heart.

很多人在你的生命中来来去去，但只有真正的朋友能在你的心中留下脚印。

Though a footprint can be positive or negative, the emphasis in these considerations is such that a person is seen primarily as a threat or load to the earth.

虽然这种足迹可好可坏，这些考虑重点在于人类从根本上给地球带来多少威胁和负担。