in an instant reaction 瞬间反应
in an instant decision 瞬间决定
change in an instant 瞬间改变
disappear in an instant 瞬间消失
understand in an instant 立刻理解
1. The room was silent in an instant.
房间瞬间安静下来。
2. She disappeared in an instant into the crowd.
她瞬间消失在人群中。
3. In an instant, everything changed.
转眼之间，一切都变了。
4. He understood the problem in an instant.
他立刻就明白了这个问题。
A: What happened to the lights?
A：灯怎么了？
B: They went off in an instant.
B：它们瞬间熄灭了。
1) 指极短时间内发生的事情
2) 表示动作迅速完成
3) 强调变化或反应非常快
1. 瞬间，立刻
e.g.The pain was gone in an instant.
疼痛瞬间消失了。
2. 一刹那之间
e.g.Everything changed in an instant.
一切在瞬间改变。
phrase
1. in a very short time; immediately; at once.