单词	合速度
释义	合速度医resultant velocity
随便看	lightning strike positioning lightning strike protection lightning strike rate lightning suspend sign lightning switch lightning tactics lightning talk lightning talks lightning technology lightnings lightning-safety lightning security management Lightning seemed heart-broken lightning shake lightning shakes lightning shield conductor lightning shielding lightning shielding failure lightning shielding failure trip lightning strikes lightning strike selectivity lightning striking pole tower lightning striking rate against poles lightning strip lightning stroke