realian.直观教具；实际事物realadj.真实的；真的；正宗的；真正的；名副其实的；实际的；现实的；不动产的adv.非常n.真实；雷阿尔（昔日西班牙等地的货币）real leather bag真皮包real estate bond不动产担保债券real estate debt不动产负债real-time head实时(超声)探头real number axis实数轴realtime billing实时计账realizable filer可实现的滤波器real time fringe实时条纹real focal plane实焦面real-time lock实时锁定

1. Real variables are usually contained in one word.
   实型变量通常占用一个字。