Plankton is at the bottom of the marine food chain.
浮游生物处于海洋食物链的最底
。
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口语话题 It's possible that animals at the bottom of the food chain could be eating them, and scientists say the biggest sources for this type of pollution included packing materials, nylon, paint and a fiber often found in cigarette filters.
有可能食物链底层的动物会吃掉它们,科学家说这种污染的最大来源包括包装材料,尼龙,
漆和纤维经常在香烟过滤器中发现。
季(双语)