1. 限制;制约因素;管制措施
    Restraints are rules or conditions that limit or restrict someone or something.

    e.g. The Prime Minister is calling for new restraints on trade unions...
           首相正在呼吁对工会施加新的限制措施。
    e.g. With open frontiers and lax visa controls, criminals could cross into the country without restraint.
           由于边境开放和签证管理松懈，罪犯可以毫无限制地进入这个国家。

2. 克制;抑制;遏制
    Restraint is calm, controlled, and unemotional behaviour.

    e.g. They behaved with more restraint than I'd expected...
           他们表现得比我预料的更为克制。
    e.g. I'll speak to the staff and ask them to exercise restraint and common sense.
           我会和员工谈一谈，要他们加强自制，理智处事。

3. 限制;控制
    Restraint of something is the act of preventing it from increasing too much or from being done freely.

restraint的解释

    e.g. For a year and a half, wage restraint on a voluntary basis worked...
           在一年半的时间里，自愿实行的限薪措施奏效了。
    e.g. He sued them for restraint of trade and won.
           他控告他们实行贸易管制，并且胜诉了。