extensiveadj.
英 ɪk'stensɪv; ek- | 美 ɪk'stɛnsɪv
中文adj. 广泛的；大量的；广阔的
词根词源
extensive (adj.)"vast, far-reaching;" c. 1600 of immaterial, c. 1700 of material things; from Late Latin extensivus, from extens-, past participle stem of Latin extendere "to stretch out, spread" (see extend). Earlier in a medical sense, "characterized by swelling" (early 15c.). Related: Extensively; extensiveness.
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