Fluctuations
n. 起伏现象；变动；波动（fluctuation的复数）
🗣️ 情景例句
It's nothing.
没什么。
Not only did I forget my train ticket, but I also forgot my passport.
我不仅忘了带火车票，还忘了带护照。
But other suns, stars as the astronomers call them, are bound to have planets like our own,
但是，其他的太阳，即天文学家所说的恒星，肯定会有像我们地球一样的行星。