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            時差N小時

            • 時差N小時 空中城堡真的存在嗎?(下)

              So when someone describes a plan or course of action that we believe may be impossible to achieve, 所以,當有人描述一個計劃或行動時,我們覺得那是不可能實現的, we tell him, You're building castles in the air. 我們會告訴...

            • 時差N小時 空中城堡真的存在嗎?(上)

              To Build Castles In The Air 不切實際 Castles are usually enormous structures requiring strong foundations and the use of heavy construction materials such as stone. 城堡通常是一座巨型建筑,需要有堅實的地基,還會使用到沉重...

            • 時差N小時 火是如何形成的?(下)

              Fire is a chemical reaction. 火是一種化學反應。 A fire needs oxygen and some kind of fuel. 火的產生需要氧氣和某種燃料共同作用。 This fuelwhether it's candle wax, wood, or gasolineusually contains big molecules that have car...

            • 時差N小時 火是如何形成的?(上)

              It's one of our most important tools, and holds prominent place in many ancient philosophies and religions. 這是我們最重要的工具之一,并且在很多古代哲學和宗教中地位顯著。 The ancient Greeks believed that firealong with...

            • 時差N小時 月球塵埃的危害有多大?(下)

              And moon dust is clingy; it gets all over spacesuits and inside space capsules. 而且月球塵埃很有依附性,太空服太空艙里面都會有。 Astronauts from the '60s and '70s used to complain that there was so much dust inside the capsule...

            • 時差N小時 月球塵埃的危害有多大?(上)

              Hey Yael, I was wonderingwhy don't we hear much about the moon anymore? 嘿,雅伊爾,我在想為什么我們現在沒什么跟月球相關的消息了呢? What are you mean, Don? 唐,你是什么意思? It's just that back in the 1960s and '7...

            • 時差N小時 不明飛行物的攻擊(下)

              By using a simple fact: far-away things look like they are going slower than close-up things. 通過一個很簡單的道理:遠處的東西運動起來看起比近處的東西慢。 You may have noticed this when driving: those distant phone poles...

            • 時差N小時 不明飛行物的攻擊(上)

              June. Nineteen sixty-nine, not one airliner but two, plus the pilot of an Air National Guard fighter plane, report being harassed by a team of UFOs. 1969年6月、兩架飛機、外加一駕駛戰斗機的空軍國民警衛隊飛行員一群不明飛行...

            • 時差N小時 你對潛水艇了解多少?(下)

              A submarine works in much the same way, with one major exception: a sub can alter its buoyancy by manipulating overall density. 海底工作大致是相同的,但有一點例外:通過操控整體密度,潛水艇能夠改變其浮力。 Submari...

            • 時差N小時 你對潛水艇了解多少?(上)

              Some of the best moments in World War II movies occur when, during a battle at sea, a periscope pokes up from the water, surveying the ocean terrain. 二戰題材的電影中一些可贊的片段是,海上作戰的時候,一個潛望鏡從水中穿...

            • 時差N小時 人類為什么會長痘痘?(下)

              That means there is nothing to open up the pore itself; and that means the pore is a great place for oils, dirt and bacteria to get clogged. 那就意味著沒有什么措施可以打開毛孔,這就意味著毛孔會被油脂,污垢和細菌堵塞...

            • 時差N小時 人類為什么會長痘痘?(上)

              One of the least pleasant things about being human is the appearance at adolescence of pimples. 對于人類而言,最惱人的莫過于青春期臉上長痘痘了。 Not only do they make their entrance just at the time when people are most self-c...

            • 時差N小時 我們為什么要鍛煉身體?(下)

              The theory is that humans are genetically programmed by evolution to be physically active. 該理論認為人類的身體活動決定自身的基因進化。 After all, our ancestors spent millions of years hunting and gathering and only the last few...

            • 時差N小時 我們為什么要鍛煉身體?(上)

              Don--Don, we're on the air. 嘿,唐,我們正在直播哦。 Sorry, Yael, just getting in some jumping jacks before work. 抱歉,雅艾爾, 只是在工作之前做些跳躍運動。 I don't want to be one of the quarter million Americans who die p...

            • 時差N小時 我們為什么要睡覺?(下)

              At night, humans do rather poorly: we can't see objects well, our color vision is entirely lost, 晚上,人類的活動力相對差些。我們看不太清物體,我們的顏色辨別也完全消失了, and we don't have the smelling or hearing...

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