the minute (that)

at the exact or first moment when

一…就

The minute I saw him, I knew something was wrong.

我一见到他，就知道有什么事不对劲儿。

The minute you let it take over, I will stop you.

一旦你失去控制，我会立即阻止你。

The minute I sat down in front of the TV, my mom came over.

我一坐在电视机前，我妈妈就走了过来。