all of a sudden这组词组什么意思?

all of a sudden这组词组什么意思? all of a sudden suddenly除了等于all of a sudden 还等于什么? all of a sudden和immediately有什么区别? 用all of a sudden造句 All of a sudden 的译文 请讲解一下All of a sudden All of the sudden I feel tired all of a sudden ,I still don not know中文意思? 语法填空 the other day john sat什么his desk and all of a sudden th All of a sudden,I feel a little bit tired. I feel tired all of a sudden 翻译下