https://online2.tingclass.net/lesson/shi0529/0008/8532/p61.mp3
https://image.tingclass.net/statics/js/2012
He spaced out for a while and didn't hear what the teacher was saying.
他一時走神,沒有聽到老師所說的話。
space out是比較口語的說法,意思是一時走神,一時失神。space out 也可指使(人)昏昏沉沉或頭腦不清,如:
That medication totally spaced me out.
那藥物讓我完全神智不清。