A deal with Japan could open the door to economic co-operation with East Asia.

与日本的交易可以打开与东亚经济合作的大门。

The police underlined the importance of the public's co-operation in the hunt for the bombers.

在寻找投放炸弹的人时，警察强调了公众协作的重要性。

The patient's co-operation is of course essential.

当然，病人的配合也很重要。