The main function of the House of Commons is legislation.下议院的主要职能是立法。

the introduction of legislation to govern industrial relations出台法律来管理劳资关系

a letter calling for legislation to protect women's rights呼吁出台保护妇女权利的法律的信件

They are encouraging the Government to introduce legislation to end this practice.他们正在鼓励政府通过立法结束这一做法。