circuitry

Spilling coffee on the laptop fried its internal circuitry, making it impossible to repair.

(Chinese) 把咖啡洒在笔记本电脑上烧毁了它的内部电路系统，导致无法维修。

Modern smartphones contain incredibly complex circuitry miniaturized onto a tiny silicon chip.

(Chinese) 现代智能手机包含了极度复杂的电路系统，并被微缩在一个微小的硅芯片上。