1.social media 社交網絡
例句:We have all witnessed the power of social media.
我們見證了社交媒體的實力。
2.back down 放棄;讓步
例句:He had to back down on plans to backdate the tax changes.
他不得不放棄追溯稅收調整的計劃。
3.ruled out 排除
例句:The possibility of suicide was ruled out.
自殺的可能性已被排除。
4.tax rate 稅率
例句:For low-paid workers, the marginal tax rate is at least 75%.
對于低收入的工人來說,邊際稅率至少為75%。