You could get into a situation where you have to decide immediately.
你可能遇上一种情况，使你不得不立刻作出决定。
By a stroke of fortune he found work almost immediately.
他运气好，几乎立刻找到了工作。
The reasons for this decision were not immediately obvious.
作出这一决定的理由暂时还不清楚。
I took to my new boss immediately.
我立刻对新老板产生了好感。
When discussing influential modern artists, three names immediately come to mind.
在讨论现代有影响的艺术家时，一下子有三个名字出现在脑海中。
A solution immediately suggested itself to me.
我马上想到了一个解决办法。