suddenly unexpectedly all of a sudden all at once
Then, breaking into a smile, he said, "I brought you something."
然后,他忽然露出笑容,说道:“我给你带了一样东西。”
—— 柯林斯例句All at once there was someone knocking on the door.
忽然有人敲门。
—— 柯林斯例句Suddenly, a voice hailed us and there was Miss Quigley.
忽然传来一声招呼,原来是奎格利小姐。
—— 柯林斯例句Those lines of Milton flashed into my mind.
弥尔顿的那几行诗忽然在我脑中闪过。
—— 柯林斯例句Suddenly there was a loud bang.
忽然传来一声巨响。
—— 柯林斯例句