toughen

toughen:to become more strict, or to make something more strict

tough:艰难的;（政策或行动）强硬的

Chinese authorities have toughened their control of cryptocurrency trading.

cryptocurrency:加密货币

The government has issued new policies to toughen the rules about using electric scooters.

electric scooters:电动滑板车

The new law toughens up penalties and restrictions for DUI offenders.

DUI 是 Driving under the influence ,酒驾.

DUI offenders:the people who commit DUI

repeat offender:重犯

the government/authority/administration/law+toughens（up）+ policy/rule/penalty/punishment/regulation/restriction

Mr Trump and his administration have got three things right. The first is that America needs to be strong. It has toughened the rules on takeovers, to give more right to national security.

takeover收购，接收，强行接管

翻译：

政府逐渐加强了对网约车的管制和处罚。

The government has gradually toughened regulations and punishments on car-hailing services.

造句:

The new law toughen the penalties for

infringement of intellectual property rights.