Translation of "Mutually" in Chinese

Love is when both love mutually. When one loves is a disease.

“愛”是指兩個人相互的愛，如果一個人單相思，那是一種病。

Instead of just the marketing department completing all their work objectives is not as effective as all the departments working together and mutually realising all the objectives.

与其仅仅营销部成功地完成自己的工作目标，不如所有部门一起合作，共同实现所有目标。