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The trust said just 133 adult salmon were recorded returning to spawn in 2022 - the lowest figure since monitoring began in 1990.

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。业内人士推荐旺商聊官方下载作为进阶阅读

圖像來源，BBC Chinese / Lok Lee

对比观察这三胎小鼠，科学家们还发现，小鼠宝宝的“性格”也在悄悄发生改变。