扔进, 接合, 啮合, 入伙, 参加合伙经营
掷界外球
n.
外加，额外奉送

throw-in throw in the towel throw in one's hand throw in contact with throw impediments in the way throw one's hat in the ring throw dust in sb.'s eyes throw a spanner in the works throw a lie in sb.'s face throw hammer throw throw-in throw in the sponge throw-in lever throw sth in throw in the towel throw in one's hand throw sth in sb's teeth throw dust in sb's eyes throw dust in sb.'s eyes spiral lead-in and spiral throw-out throw a lie in sb's face