the instant

汉语翻译

一...就

The instant they heard the alarm, they fell in for action.
他们一听到警报，就立即集合准备战斗。
The problem about the instant camera is the lack of negative, and their print can fade considerably within a few years.
一次成像相机的问题在于没有底片，而其相片在数年内就会明显褪色。
At the instant of the explosion, the whole city was in sound sleep.
在爆炸的瞬间，整个城市在沉睡中。
Tell me the instant they arrive.
告诉我他们到的时间