We can also use them in this device, where they need a little extra power to make hydrogen gas.
我们的试验就利用这种细菌，但是需要额外施加少量的电能，才能产生氢气。
2
The researchers used what's called an ion microscope to compare the amount of normal hydrogen in the moon rocks to the amount of the hydrogen isotope deuterium, which carries an extra neutron.
The researchers used what’s called an ion microscope to compare the amount of normal hydrogen in the moon rocks to the amount of the hydrogen isotope deuterium, which carries an extra neutron.