Way up north in the Canadian Arctic, seabirds are picking up dangerous chemical in the ocean and delivering them to ponds near where the birds live.
在加拿大北极的北方地区，海鸟在海洋中捡起危险的化学物质，并将它们运送到鸟类生活的池塘附近。
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The next logical step would be a space telescope capable of picking up the chemical signatures of life, including the presence of oxygen, water vapour and carbon dioxide.
Effects of different picking methods on chemical composition and content of volatile aromatic matter of upper leaves in flue-cured tobacco were studied.