The spines of sea urchins can generate a voltage when water moves around them — a phenomenon that could be used to design underwater flow sensors.
如今，入境游市场日趋成熟，入境游客的选择愈加多元，他们开始追求沉浸式、品质化的旅行体验，渴望看到一个真实的中国。对中国文化的热爱，正是直观注脚之一。
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In December, the UK, Norway, the Faroe Islands and Iceland agreed to cut mackerel catches by 48%, but Waitrose said this did not go far enough.