Dusk fell over the desert.
Yūyami ga sabaku o tsutsunda.
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
to wrap up; to tuck in; to pack; to do up; to cover with; to dress in; to conceal; to hide; to be engulfed in; to be enveloped by