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Hydrogen is a gas with no colour and no smell.
HydrogenHydrogen is a gas 是一種無色無味的氣體with no colour and no smell。
It is the lightest of all the chemical elements — lighter even than the in party balloons. Its symbol is H, and it is element number 1. On its own it usually travels as H₂, two atoms joined together.
它It 是所有化學元素裡最輕的is the lightest of all the chemical elements——甚至比派對氣球裡的氦氣還輕lighter even than the helium in party balloons。它的符號Its symbol 是His H，而and 它it 是第1號元素is element number 1。單獨存在時On its own 它通常以H₂的形式存在it usually travels as H₂，也就是兩個原子連在一起two atoms joined together。
When hydrogen joins with oxygen, you get water; that is why it was named “the water-maker.” Factories use it to make ammonia (for ) and many other chemicals, and people now talk about it as a clean fuel, because burning it gives water, not smoke. Though actually, making the hydrogen in the first place often still uses a lot of energy, and a mix of hydrogen and air can explode — old learned that the hard way.
當氫和氧結合時When hydrogen joins with oxygen，就會得到水you get water；那就是that is why it was named 為什麼它被稱為「造水者」的原因"the water-maker."。工廠Factories 用它來製造氨（做肥料用）use it to make ammonia (for fertilizer) 以及許多其他化學品and many other chemicals，而and 人們people 現在把它當成一種乾淨燃料在談論now talk about it as a clean fuel，因為because 燃燒它產生的是水，不是煙burning it gives water, not smoke。不過其實Though actually，一開始要製造氫氣making the hydrogen in the first place 往往還是要用掉很多能源often still uses a lot of energy，而and 氫氣和空氣的混合物a mix of hydrogen and air 可能爆炸can explode——old airshipsold airships 學到了教訓learned that the hard way。
In school science it is one of the first elements you meet. The word is formal and scientific; you would not use it when you mean water in daily talk.
在學校自然科學裡In school science 它it 是你最早遇到的元素之一is one of the first elements you meet。這個詞The word 是正式又科學性的is formal and scientific；你you 在日常講話裡如果只是要說「水」不會用這個詞would not use it when you mean water in daily talk。
組成Borrowed from French hydrogène, coined by the French chemist Louis-Bernard Guyton and others. hydro- is from Greek for water; -gène / -gen means “that produces” — so hydrogen is “the thing that makes water.”
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
hydrogennoun/ˈhaɪdɹəd͡ʒ(ə)n/
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chemistrynatural-sciencesphysical-sciencesThe lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
- Our professor then reminded us that a hydrogen ion is merely a proton, and thus we should think about acid-base theory as we consider this problem further.
- The ignis fatuus or Jack a lantern, ſo frequently alluded to by poets, is ſuppoſed to originate from the inflammable air, or Hydrogene, given up from moraſſes; […]
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chemistrynatural-sciencesphysical-sciencesThe lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
- Each carbon of the ring has one hydrogen attached except for the fourth one, which is bonded to a substituent.
- Water occupies an intermediate position and shows tendencies both to add and give up hydrogen, which are nearly balanced. Then, in terms of the Lewis theory, a free pair of electrons on one water molecule might be able to exert sufficient force on a hydrogen held by a pair of electrons on another water molecule to bind the two molecules together.
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chemistrynatural-sciencesphysical-sciencesMolecular hydrogen (sense 1; symbol H₂), a colourless, odourless and flammable gas at room temperature.
- A large tank of hydrogen constituted most of the bulk of that rocket.
- [Jacques] Charles was the first to send up a hydrogen balloon, 12 feet in diameter, which rose 3,123 feet, disappeared in the clouds, and fell at the distance of 15 miles.
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chemistrynatural-sciencesphysical-sciencesMolecular hydrogen (sense 1; symbol H₂), a colourless, odourless and flammable gas at room temperature.
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chemistrynatural-sciencesphysical-sciencesSynonym of protium (“the lightest and most common isotope of hydrogen (sense 1; symbol H, ¹H, or 11H), as contrasted with deuterium and tritium”).
- Both hydrogen and deuterium are present in every glass of water that you drink, but the amount of deuterium is rather small.
- Hydrogen is generally considered to be electronically the same as deuterium. […] Neutron diffraction experiments by Ferguson, Schindler, Tanaka, and Morita (ref. 4) revealed that, near 50K, some hydrogen had moved from interstitial octahedral sites (0, 0, 1/2; 1/2, 0, 0; …) of the palladium lattice to the tetrahedral sites (1/4, 1/4, 1/4; 3/4, 3/4; …) (O-T transitions).
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。