rotations造句
        Farmers traditionally used long - term 
rotations of hay, pasture, and corn.
农民以往 长期 实行干草 、 牧草和玉米轮作.
The crankshaft makes three 
rotations for each rotation of the rotor.
转子每转一周,曲轴转3周.
Image graphs are rather robust to small in - depth 
rotations of the head.
影像图是相当强劲的小深入的旋转.