Tip of the Week No.111 ‘all of a sudden’

all of a sudden idm
quickly and unexpectedly: All of a sudden someone grabbed me around the neck.

all of a sudden イディオム
突然、予想外に：突如誰かが私の首を掴んだ。

It seems that the earthquake happened this morning all of a sudden.
どうやら今朝の地震は突如起こったようです。