the search for safe alternatives 寻求安全替代品
OBJECTIVE to set-up safe alternatives to ethidium bromide (EB).
目的建立比溴化乙锭(EB)更为安全的核酸染色方法。
Safe alternatives: broccoli, radishes and Onions.
安全的替代品:花椰菜,萝卜和葱。
Safe alternatives: green peas, broccoli and cabbage.
安全的替代品:绿色豌豆,椰菜和白菜。
So how do you feed a city like, for example, Nairobi or many other very large mega-cities with desperately poor people in them where food simply cannot be provided in cities without access to diesel and so on?" Taylor says governments need to start investing in safe and sustainable energy alternatives.
VOA: standard.2009.10.20
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