Migrating geese fly in a v formation to save energy 遷移中的大雁群成v字隊(duì)形飛是為了節(jié)省能量。
Migrating wild geese fly in a v formation to save energy 遷徙中的大雁群成v字隊(duì)形飛是為了節(jié)省能量。
The gold lights hovered for awhile , according to the witnesses , and then disappeared . to some , the description sounded very much like the so - called phoenix lights , another v formation that appeared in the sky near phoenix in march 1997 1997年3月在亞利桑那州菲尼克斯市附近天空也曾出現(xiàn)過(guò)與這次出現(xiàn)在新澤西州的金光很相像的v形光束,當(dāng)時(shí)還有人將其拍攝下來(lái)。
百科解釋
A V formation (sometimes called a skein) is the symmetric V-shaped flight formation of flights of geese, ducks, and other migratory birds. V formations also improve the fuel efficiency of aircraft and are used on military flight missions.