原文：That little motor inside your phone spins an unbalanced weight to create vibration, essentially a tiny earthquake generator living in your pocket.

譯文：手機里那個小馬達通過旋轉(zhuǎn)一個不平衡的砝碼來產(chǎn)生振動，本質(zhì)上就是你口袋里裝了一個微型地震發(fā)生器。