In some countries, researchers are now experimenting with agro-forestry-the planting of crops between rows of special trees.
有些国家的研究人员正在开展一项农林相结合的实验——在一排排特殊的树木间种植庄稼。
The first kinds of lacquer were made from resin material taken from special trees.
最早的漆来自某些特殊树木中的树脂。
The first kinds of lacquer were made from resin material taken from special trees.
最早的漆来自某些特殊树木中的树脂。
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