No, 22
= all of a sudden = all at once
= suddenly = unexpectedly = on a sudden
ex) All at once it began to rain. (°©Àڱ⠺ñ°¡ ³»¸®±â ½ÃÀÛ Çß´Ù.)
¨Ï Copyright 1999~ TECHNOTE2002 / TECHNOTE.INC,