例句與造句

1. In the spring of 1912, Gehrcke and Seeliger determined that light from cathode rays ( electron beams ) passing through gases, such as nitrogen and mercury vapor, became longer in wavelength, as the velocity of the cathode rays were slowed, i . e ., becoming lower in energy.
2. It's difficult to find passing through gases in a sentence. 用passing through gases造句挺難的