Definition: Tough rules are severe. Level: C2
政府为该行业出台了严厉的新规定。
The government introduced ___tough new regulations for the industry.
公众舆论要求对媒体内容实施严格的限制。
Public pressure demanded ___tough restrictions on media content.
经过数周的艰苦谈判，一项新条约得以签署。
After weeks of ___tough negotiations, a new treaty was signed.
