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In China, there's an animal even more rare than the celebrated giant panda. It is called the finless porpoise.
在中國有一種動物比知名的大貓熊還稀有，牠叫作江豚。

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And David McKenzie introduces us to this critically endangered species and the scientists who are trying to save it.
大衛．麥肯錫要為我們介紹這個極度瀕危的物種以及正在努力拯救這種動物的科學家。

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Coming up for a quick hello and coming in for a closer look. This quirky creature is a finless porpoise.
浮上來快速打聲招呼，靠過來看個究竟，這個古怪的生物就是江豚。

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It's mating season, so they're dancing and acting a little strange.
現在是交配季節，所以牠們跳舞，而且動作舉止也都有點奇怪。

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It's amazing how intelligent they are. You can see the wheels turning in their brain.
牠們的聰明程度不可思議，你可以看到牠們正在動腦筋。

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Porpoises are smaller than dolphins with shorter snouts, sociable, but shy -- unless you're professor Kou Zhangbing of Wuhan's Institute of Hydrobiology.
江豚的體型比海豚小、口鼻較短、個性親和但害羞，除非你是武漢的水生生物研究所的寇章兵教授。

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He calls them over, gets a kiss and gives it a snack while doing a medical checkup.
做健康檢查時，他叫牠們過來，親他一下就給個點心。

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"The porpoises are part of my life," he says. "They've become our friends."
「江豚是我生命中的一部份，」他說：「牠們已經成了我的朋友。」

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Friends under threat. Now, there are fewer than 1,000 left. Their natural home is the Yangtze River.
受到威脅的朋友。現在牠們剩餘的數量不到一千隻，牠們的自然棲息地是長江。

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Habitat loss, pollution and overfishing are killing them off.
喪失棲息地、污染和濫捕都在奪走牠們的性命。

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If proper measures aren't taken, they will be extinct in 10 years. But to be honest, we only have five years to take action.
如果不採取適當的措施，牠們會在十年內絕跡。但說實話，我們只有五年的時間採取行動了。

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Chinese scientists are acting, creating a breeding sanctuary cut off from the river.
中國科學家正付諸行動，從長江截出一個復育區。

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Only China has this species, and children will start asking questions one day, like, "Why did we let them go extinct?"
只有中國有這個物種，有一天孩子們開始會問，像是「為什麼我們讓他們絕跡了？」

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That's why we want this reserve.
這就是為什麼我們要有這個保育區。

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So they take painstaking care to build up the numbers.
因此他們不辭辛勞地努力增加數量。

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So, we're going to a holding pen which is on the edge of the lake. There are three porpoises here, around four to five years old.
那麼我們要去湖邊的一個圍欄，這裡有三隻約四到五歲的江豚。

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They feed them like this by hand so they know they're getting exactly the right nutrients they need.
他們像這樣親手餵食，這樣才知道牠們獲得確切所需的營養。

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For scientists like Kou, it's personal. And losing this national treasure would be like losing a friend.
對寇教授這樣的科學家而言，這是關乎個人的事，失去這個國寶會像是失去一個朋友一樣。