When studying the movements of objects, we must first set up the reference system.
研究物体运动时，一定要先设置参照系。
I especially love the first three movements of the Ninth Symphony.
我特别喜欢第九交响乐的前三个乐章。
In addition, this is the first report of SOD-plus syndrome with mirror hand movements.
此外，这是视隔发育不良综合征的手部动作与镜子的第一次报告。
In addition, this is the first report of SOD-plus syndrome with mirror hand movements.
此外，这是视隔发育不良综合征的手部动作与镜子的第一次报告。
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