とっさの判断でブレーキを踏んだ。
I hit the brakes in a split-second decision.
彼はとっさに嘘をついてしまった。
He reflexively told a lie in that instant.
I instinctively reached out and grabbed the child.
He made a split-second decision to turn the wheel and avoid the accident.
When suddenly asked my name, I couldn't answer right away.