Back to the Future II, released in 1989, made a series of outlandish predictions about 2015, the year its key characters travel to from 1985.
《回到未來2》上映于1989年，片中主角從1985年穿越到了2015，演繹了對2015年的一系列怪異預測。

Although several of the film's predictions, like video calls and wearable technology, came true, Back to the Future II showed the pitfalls of making long-term forecasts. The world of 2015 was one of hoverboards, flying cars and power clothing, and instead we got Snapchat, selfies and man buns.
雖然一些預測已經成真，比如視頻電話、可穿戴技術，但這個電影也顯示出長期預測的不足之處。根據電影，2015年會有懸浮滑板、飛行汽車和電動衣服，但現實中，2015年是“閱后即焚”式照片分享、自拍和男式小發髻的世界。

With that in mind, we asked six experts what the world of 2045 will look like:
于是我們請教了六位專家2045年世界會是什么樣子：

You'll be able to purchase high-quality emotions online.
人們將能網購高質量的感情。

Emotion-sharing experiences are the latest fad in 2045. Imagine your friend at Glastonbury can post a photo on Instagram and with it comes bundled a faint twinkling of what she was feeling right there in that moment, so you too can share emotionally in her social experience.
表情分享將是2045年的新潮流。想象一下，你的朋友在英格蘭西南部的格拉斯頓伯里鎮向照片分享平臺Instagram上傳了一張照片，并附上感情包，傳遞出她當時那一瞬間的心情，如此你就能很直觀地感同身受。

Our cities will be made from living, dynamic materials that respond to the environment.
未來的城市將由能對環境做出反應的活性、動態材料構成。

The urban environment of 2045 blends architecture with living materials that are mouldable, adaptable, responsive and disposable. Entirely new synthetic life forms, or biological machines, made of engineered living cells from bacteria, fungi and algae will grow and evolve with the changing needs of a building’s inhabitants. They breathe in pollutants, clean wastewater, and use sunlight to make useful chemicals, energy, heat and vibrant vertical gardens.
2045年，都市建筑將采用可以模塑、適應性強、感應性好的一次性活性材料。由細菌、真菌和水藻的活細胞制成的全新合成生命體，或者說生物機器，將隨時根據建筑中居民的需要而生長進化。他們吸入污染物，清理廢水，并利用陽光制造有用的化學品、能量、熱和生氣勃勃的垂直花園。

Humans will upgrade themselves continuously.
人類將不斷自我升級。

Those who can afford it will have better eyesight and hearing, and just the right cocktail of food/medication to be the very best that they can be for the day ahead, based on micro performance analysis of the day just gone.
只要有錢，就能獲得更好的視力和聽力，并且能夠根據前一天的微表現分析，計算出今天飲食用藥的最佳搭配和分量，讓明天的自己獲得最佳狀態。

Your phone, car or home can read your feelings and adapt accordingly
手機、汽車或房子將能讀取人類情感并相應地做出調整。

Machines will be able to sense and then adapt themselves to the emotional state of an individual user. At the moment machines can work out where someone is, who someone is and perhaps what they are doing or "like" but that’s about it. The next stage will be for machines to intuit human feelings. This can be done by ‘harvesting’ facial expressions, body language, heart rate, voice and so on. If you are typing text into a computer the computer might consider the speed you are typing, decide you are stressed and conclude that this isn’t the best time to allow you to read negative emails.
機器將有感知能力，能根據用戶的情感狀態自我調整。而且，機器能分析出位置信息、用戶身份，甚至可能判斷出用戶在做什么事或者用戶“喜歡”什么，不過也僅限于此了。更高級的機器有望憑直覺感知人類情感，這需要機器“收集”人類的面部表情、身體語言、心率、聲音等等。如果你在計算機上打字，計算機可能根據你的打字速度，判斷出你心情低落而且目前不適合閱讀消極郵件。

If you are driving a car, the car might consider how you are driving and infer certain conclusions. If the car decides you are angry and in danger of driving unsafely it might adapt itself to make things safer. On the other hand a shop might use this technology to work out when customers are more likely to buy things, including things they probably don’t really want.
如果你在開車，車子能參考你的開車狀態，做出相關推斷。如果車子認為你在生氣，而且無法安全駕駛，它可能自我調整，保證你的安全。另一方面，商店也可以使用這項技術，分析出客人什么時候更可能購物，包括他們可能不想買的東西。

Robotic insect swarms will help farmers and the military
昆蟲機器人將有助于農業和軍事。

By 2045 we should see insect-sized robotic insects capable of flying in co-ordinated swarms. They might be used for crop pollination purposes or as battlefield or crowd control cameras. These flying robots could be fitted with air sniffing or sampling technology to test air quality, search for pollution or give early warning about biological or gas attacks. They could also be programmed to interact with real insects.
到2045年，世界上將有昆蟲大小的昆蟲機器人，他們能協調地成群飛，可用于作物授粉、戰場或群體監控攝像機。這些飛行機器人也可用于空氣嗅探或取樣，以檢測空氣質量，尋找污染，在生物或毒氣襲擊前發出預警。他們經編程后，也可與真實的昆蟲互動。

3D printed pizza
3D打印比薩餅

An invention that featured in Back to the Future II was the Black & Decker Hydrator. This was a kitchen device that could turn raisins back into grapes and stale pizza into a freshly delivered snack. By 2045 many kitchens will feature a 3D Printer that can turn out a fairly respectable printed pizza, biscuits, pretzels and so on.
《回到未來2》中的一個特色發明是水化器（Black & Decker Hydrator）。這是一種廚房設備，能把葡萄干變回葡萄，把變了味的比薩餅變成新鮮出爐的樣子。到2045年，很多廚房都將有3D打印機，能做出相當不錯的打印比薩、餅干、椒鹽脆餅等等。

Vocabulary

outlandish: 奇異的
algae: 海藻
stale: 不新鮮的；走了味的
pretzel: 椒鹽卷餅，椒鹽脆餅干

英文來源：每日電訊報
譯者：楊軒
審校&編輯：丹妮