They have campaigned strongly for compulsoryregistration 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》
2
Compulsory licences may be granted to qualified enterprises after three years from registration if the patent owner will not or fails to license the patent on reasonable terms.
Housing ownership elements registered in the registration of state-owned land which was transferred for court compulsory transfer of registration of ownership of housing are discussed.