Officer Montoya was first on the scene.

蒙托亚警官是第一个到达现场的人。

Firefighters were on the scene immediately.

消防队立刻赶到现场。

By the time I arrived on the scene , it was all over.

我来到现场时，一切都已结束。

He could react jealously when and if another child comes on the scene.

如果有别的孩子加入其中，他可能会表现得相当嫉妒。

An American officer on the scene said no one had intruded into the space he was defending.

现场的一名美国军官说还没有人闯入过他所防卫的区域。