In the general case, you create an object using.
一般情况下，使用以下语句创建对象。
I now want to start with a very general initial condition of an object, little m, in orbit...
我想用一个符合，一般条件的物体，小m，在轨道。
I now want to start with a very general initial condition of an object, little m, in orbit...
我想用一个符合，一般条件的物体，小m，在轨道。
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