n. 广大, 无边, 巨物

[ noun ]
unusual largeness in size or extent or number
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Immensity \Im*men"si*ty\, n.; pl. {Immensities}. [L. immensitas:
cf. F. immensit['e].]
The state or quality of being immense; inlimited or
immeasurable extension; infinity; vastness in extent or bulk;
greatness.

Lost in the wilds of vast immensity. --Blackmore.

The immensity of the material system. --I. Taylor.