本期内容：
In an email to drivers, Uber said adding tipping was the first announcement in its "180 days of change", a program that the company hopes will help it improve its relationship with drivers. Driver pressure will have played a significant factor - but it is likely that wider concerns are what prompted this latest move by Uber, a company left in tatters after a hugely critical report into its culture. In a separate statement posted Tuesday, Uber's lesser-known co-founder, Garrett Camp, said the company must hold itself to a "higher standard" in the wake of its numerous scandals. Travis Kalanick, the firm's chief executive, is currently on a leave of absence.

Tipping: 小费
Prompt: 导致
Tatters: 碎片
Scandal: 丑闻

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