回旋

(1)a single complete turn (axial or orbital); "the plane made three rotations before it crashed"; "the revolution of the earth about the sun takes one year"

(2)1回の完全な回転（軸であるか軌道の）

(3)the act of rotating as if on an axis; "the rotation of the dancer kept time with the music"

(4)軸の周りを回るように回る行為

(1)