“母体”造句

镭在离它的原始母体一定距离上固定下来.
Radium can be fixed some distance from its original source.

我们的祖国是我们大家的母体.
Our motherland is the parent body of us all.

不产生可育花粉的品种被用作母体.
Varieties that do not produce fertile pollen are used as females.