故交 meaning in Chinese

old friend

Vast amounts of traditional food is prepared for family and friends , as well as those close to us who have died
人们为亲朋好友，以及已故的故交准备了各式各样的传统食物。
The two facilities had exchanged deer for breeding purposes , thus indicating that the disease was infectious ? even to a different species : soon the elk at the facilities contracted the disease . ( deer and elk both belong to the cervid family
这两个研究单位因繁殖之故交换鹿只，由此可见此病具传染性，甚至还可传染给不同物种，因为没多久后，研究室的麋鹿也遭受感染（鹿与麋鹿同属于鹿科动物）。