explain away
US /ɪkˈspleɪn əˈweɪ/
UK /ɪkˈspleɪn əˈweɪ/

1.
解釋, 開脫
to account for something in a way that makes it seem less serious or bad
:
•
He tried to explain away his absence by saying he was sick.
他試圖通過聲稱生病來解釋自己的缺席。
•
Her strange behavior couldn't be explained away easily.
她奇怪的行為不容易解釋清楚。