外来物种包括日本紫菀和灌木忍冬。
Newcomers include Japanese knotweed and Amur bush honeysuckle.
市场上很多补品是从日本紫菀科植物提取出来的，这些植物数量多但不是很贵。
Many of the supplements on the market extract it from the Japanese knotweed plant, which is a plentiful and inexpensive source.
市场上很多补品是从日本紫菀科植物提取出来的，这些植物数量多但不是很贵。
Many of the supplements on the market extract it from the Japanese knotweed plant, which is a plentiful and inexpensive source.
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