Noungreat blue sea; ocean

Nounblue waves; blue wave · hair that has lost its shine due to ageing

Expressions (phrases, clauses, etc.)the world is a scene of constant changes; the blue sea turns into a mulberry field

Nountalented person unbeknownst to the world

Expressions (phrases, clauses, etc.), Noundrop in the bucket; drop in the ocean; one grain of millet in a vast ocean