They have campaigned strongly for compulsory registration of dogs.

他们大力开展了狗的强制性登记活动。

《柯林斯英汉双解大词典》

Ms Ferguson explained to MSPs that her proposed legislation would introduce compulsory registration for factors.

BBC: Factoring services debate

Conservative peer and former RSPCA chair Baroness Fookes said the organisation had long-supported compulsory registration of dogs as the solution "to manifold problems".

BBC: Mandatory micro-chipping for dogs planned

He pointed to the creation of a voluntary code of practice by trade associations, but said a compulsory registration scheme would simply regulate those in least need "while the cowboy continued to operate".

BBC: Cowboy fears stop essential maintenance