| 词汇 | conservancy |
| 词根词缀 | 词源： 1755, "commission with jurisdiction over a port or river," from L. conservant-, prp. stem of conservare (see conserve); earlier was conservacy (mid-15c., Anglo-Fr. conservacie). Meaning "official preservation of undeveloped land" dates from 1859 (first reference is to protection of bo trees in Ceylon). |
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