近年来，有关家庭暴力的投诉数量明显增多。

In recent years, the amount of complain on domestic violence is increasing obviously.

youdao

已有对服务水准的创纪录数量的投诉。

There's been a record number of complaints about the standard of service.

《柯林斯英汉双解大词典》

已有对服务水准的创纪录数量的投诉。

There's been a record number of complaints about the standard of service.

《柯林斯英汉双解大词典》