A philosophical problem has the form: 'I don't know my way about.'
最好的原料才能做出最好的面包。就是这么简单。
气候变化对海洋生物构成最大威胁,我们必须立即采取行动减轻其影响。
We must listen to both the scientists and the fishermen - they each hold pieces of the puzzle for sustainable fisheries.