rim-fire

英 ['rɪmf'aɪər] 美 ['rɪmf'aɪər]

• 边缘底火

rim-fire的用法和样例：

例句

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。