This is because the time it takes the Earth to rotate once about >its axis is a little shorter than the 24-hour "solar" day we're accustomed >to.
(This; is; because the time it takes the Earth to rotate once about >its axis is a little shorter than the 24-hour "solar" day) (its axis; is; a little shorter than the 24-hour "solar" day; T:the time it takes the Earth to rotate once) (we; 're; accustomed >to; T:the 24-hour "solar" day)
This its axis we
is is 're
because the time it takes the Earth to rotate once about >its axis is a little shorter than the 24-hour "solar" day
a little shorter than the 24-hour "solar" day T:the time it takes the Earth to rotate once
accustomed >to T:the 24-hour "solar" day