rim-fire

英['rɪmf'aɪər] 美['rɪmf'aɪər]
  • 边缘底火
  • gear n.传动装置;齿轮;排挡;工具;装备v.调整;使适应于;以齿轮连起
  • rim n.边;框vt.镶边vi.形成边缘
    1. The rising heat of a fire beneath a giant sequoia dries the cone and causes the scales to open.And the seeds are able to release.
      树底火的热量不断升腾,使果球干裂,然后树种得以传播。