The decision to transfer the investigation from the police to the district attorney's office is a mutual one.
将调查从警方移交到区律师办公室的决定是共同做出的。
《柯林斯英汉双解大词典》
2
Yoshihiko Noda, less than a month in office as prime minister, has sought to reassure the Americans that the mutual alliance is Japan's "greatest asset".
入阁还不满一个月的首相野田佳彦试图安抚美国，称共同联盟是日本的“最大财产”。
3
Another strategy is forcing employees to sign "love contracts," the office version of a prenup, stating their mutual affection will not interfere with the workplace.