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单词 helicopter yarding
释义 helicopter yarding
[`hel·ǝ´käp·tǝr ¦yard·iŋ]
FORESTRY
A technique that uses a helicopter to bring logs from a forest to a wide level spot along a road where the logs can be loaded onto trucks for hauling to a sawmill; used where steep terrain and unstable ground makes it impossible to build roads without damaging watersheds.
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