1. During indicates within a period of time.
We slept during the day.
They practiced basketball during the summer.
2. During means at the same time as another event.
I slept during the football game.
They lived in the north during the war.
Element
Element : helium
Symbol : he
Atomic no. : 2
Melting Point (deg c) : -272.2
Boiling Point (deg c) : -268.934
Discoverer : janssen (1868)
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