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“cover”
(the study of the deep seas or oceans involves the abyss or the "deep seas" which cover almost two-thirds of the earth's surface; showing applicable scientific terminology in this unit)
Word Entries containing the term:
“cover”
A piece of cloth, plastic, etc., which covers and protects something from getting dirty: The rare painting was draped with a dust cover to protect it from light and dust.
This entry is located in the following unit:
English Words in Action, Group D
(page 6)