Fluctuations
n. 起伏現象；變動；波動（fluctuation的復數）
??? 情景例句
It's nice to meet you.
很高興見到你 。
How much is this land per acre?
每英畝地要多少錢？
Excuse me! Can you tell me the way to the museum, please?
勞駕！你能告訴我去博物館怎么走嗎？