My favorite toy was a human body model with all the internal organs.

我最喜欢的玩具是一个人体模型 里面有所有的内脏。

There are other specifications such as the Human Body Model (HBM) (see Figure 2 for typical HBM test circuit) and the Machine Model (MM).

还有其他规格，例如人体模型 (HBM)（典型 HBM 测试电路见图 2）和机器模型 (MM)。