1·So typical moderators in reactors thermal reactors are deuterium and hydrogen.
所以在反应堆里，典型的慢化剂,热能反应堆是氘和氢。
2·They found deuterium at higher levels than it's found in Earth water —but at levels similar to the comets Hale-Bopp, Hyakutake and Halley.
他们发现，同地球上的水相比，氘的含量更高——但同海尔·波普彗星、哈库塔克彗星和哈雷上的水有着相似的平。
3·They found deuterium at higher levels than it's found in Earth water - but at levels similar to the comets Hale-Bopp, Hyakutake and Halley.
他们发现，同地球上的水相比，氘的含量更高——但同海尔·波普彗星、哈库塔克彗星和哈雷上的水有着相似的平。
4·In this scenario, hydrogen would no longer be stable, but its slightly heavier isotopes deuterium or tritium could be.
在这个设定中，氢不再是稳定的，但是其更重些的同位素氘和氚却是稳定的。
5·Like deuterium, it is rare relative to helium-4, but, unlike hydrogen, helium doesn't form chemical compounds as abundant as water.
象氘一样，相对于氦- 4它是非常罕见的，但是不同于氢，氦不是来自化学混合物象水那样丰富。