They can produce lumber, support jobs, safeguard clear waters, and provide refuge for countless forest species. If we let them.

它们可以生产木材、支撑就业、保持山青水秀、还可以为无数森林物种提供栖息地，只要我允许它们活下来。

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Common Grade of Lumber - Grades at least 66.66% clear in cuttings 3" wide by 3' long or 4" wide by 4' long minimum.

符合美国硬木协会要求的板材等级：普通1级，至少66。66%表面干净，3英寸宽以上，3英尺长以上；或4英寸宽以上，4英尺长以上。

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