2.to do or begin to do something, especially something that will take a long time or be difficult ??? ??? ??? scenario n. a description of possible actions or events in the future: (ho??n c???nh, quang c???nh, vi???n c???nh t????ng lai) ??? ??? ??? threat n. a suggestion that something unpleasant or violent will happen, especially if a particular action or order is not followed: (s??? ??e d???a, m