In medieval Europe an exploding population and hard-working monks put paid to perhaps half its temperate oak and beech woods-mostly, as is usually the case, to clear space for crops.
在中世纪的欧洲，勤勉的僧人和不断膨胀的人口，可能毁坏了欧洲一半的温带橡树和山毛榉——照惯例，主要是为农作物腾出土地。
Exhibit: American hardwood lumber and floorings. species include red oak white oak ash hard maple soft maple hickory cherry basswood beech birch curly soft maple butternut white pine etc.
展品：北美硬木板材，地板等。品种包括红橡，白橡，水曲柳，硬枫，软枫，山核桃木，樱桃木，椴木，山毛榉，桦木，波纹软枫，白胡桃，白松木等。
Wood is used widely as raw material, but hard wood dust (e. g. oak and beech) can lead to nose cancer.
木头作为原材料得到广泛应用，但硬木粉尘（如橡木和山毛榉粉尘）可导致人患鼻癌。
Species include Red Oak, White Oak, Ash, Hard Maple, Soft Maple, Hickory, Cherry, Basswood, Beech, Birch, Curly Soft Maple, Butternut , White Pine, etc.
品种包括红橡，白橡，水曲柳，硬枫，软枫，山核桃木，樱桃木，椴木，山毛榉，桦木，波纹软枫，白胡桃，白松木等。
Species include Red Oak, White Oak, Ash, Hard Maple, Soft Maple, Hickory, Cherry, Basswood, Beech, Birch, Curly Soft Maple, Butternut , White Pine, etc.
品种包括红橡，白橡，水曲柳，硬枫，软枫，山核桃木，樱桃木，椴木，山毛榉，桦木，波纹软枫，白胡桃，白松木等。
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