My grandfather always looks back upon his youthful days.
我爺爺經(jīng)?;仡櫵贻p的時候。
We often look back upon the happy days we spent together.
我們經(jīng)?;貞浽?jīng)一起渡過的快樂時光。
The old army man always looks back upon the little things in the war.
這位老紅軍經(jīng)?;仡檻?zhàn)爭中的點點滴滴。