The vegetable origin of coal is no longer a matter of doubt.
关于煤炭的植物来源早就不是一个谜了。
Gum: In Botany, an adhesive substance of vegetable origin , mostly obtained as exudate from the Bark of trees or shrubs Belonging to the pea family .
树胶：植物产生的黏性物质，多得自豆目豆科乔木或灌木树皮的渗出物。
Only a few vegetable-origin foods have such a high percentage of protein.
只有几种来源于植物的食品含有如此高百分比的蛋白质。
Only a few vegetable-origin foods have such a high percentage of protein.
只有几种来源于植物的食品含有如此高百分比的蛋白质。
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