We followed the narrow paths silently but swiftly, one behind another.

我们一个跟着一个，沿着狭窄的小道静静地但急速地往前走。

youdao

The four lawyers rode along, one behind another; for the path way was narrow, and the mud on each side of it was deep.

因为路很窄并且路两旁的泥很深，所以这些律师一个接一个的骑着马。

youdao

They leave long trails behind them, tracks you might say as they move from one point to another.

它们身后留下了一条长长的痕迹，你也许可以说这是它们从一个位置移动到另一个位置的轨迹。

youdao

The problem was that after successfully floating over one wave you find that there is another one behind it just as strong and ready to flood your boat.

VOA: special.2011.04.09

But at one time or another, we have all been left behind while the one we love has gone off to train for battle, or keep the peace, or wage war.

NPR: Waiting and Dreading: Families in War Time

When the universe had cooled some more, those particles and antiparticles should have gone on to annihilate one another, leaving only photons behind.

ECONOMIST: Particle physics makes sense, but it assumes too much

But that would suggest that, when things had cooled down a bit, these particles would eventually have annihilated one another leaving nothing but energy behind.

ECONOMIST: Particle physics