join forces片语KK [dʒɔɪn ˋfɔrsɪz] /dʒɔɪn ˈfɔɹsɪz/发音片语1联手、合力、携手合作The two companies joined forces to develop a cheaper vaccine.这两家公司联手开发更便宜的疫苗。2会师、合兵军事The two armies joined forces on the eastern bank of the river.两支部队在河的东岸会师。用这个字练口说→