今天我们要学的词是 roll back. To roll back 有退回，取消的意思。North Carolina Governor Roy Cooper signed legislation to roll back a year-old law that requested transgender people to use the public restrooms corresponding to their birth gender. 北卡罗来纳州州长库珀签署议案，取消了一年前通过的要求跨性别者按出生性别使用公厕的法律。Congress passed bills to roll back Internet privacy rules from the Obama era. 国会通过议案，取消奥巴马任内通过的保护互联网隐私的规定。好的，我们今天学习的词是 roll back, roll back, roll back...