This is the 4744th most frequent Chinese word.
突如其来
Sudden and unexpected.
In this sentence, "突如其来" describes the unexpected and abrupt onset of the storm.
突如其来的风暴使整个城市陷入混乱。
The sudden storm caused chaos throughout the city.
Here, "突如其来" emphasizes the unforeseen nature of his comment that startled the group.
他突如其来的一句话让大家感到惊讶。
His sudden remark surprised everyone.
"突如其来" in this phrase highlights the abruptness and unpredictability of the crisis, necessitating immediate attention.