Fluctuations
n. 起伏现象；变动；波动（fluctuation的复数）
🗣️ 情景例句
Then you'll see a big old red barn.
然后你就会看到一座旧的红色大粮仓。
Can you afford the expense?
你出得起这笔费用吗？
Behind the house there is a tree.
房子后面有一棵树。