工程师们拆解了这款手机，试图通过逆向工程了解它的工作原理。

The engineers took apart the smartphone to ___reverse-engineer how it works.

工程师们通过逆向工程分析了这款手机的加密系统，以了解其安全特性。

The engineers ___reverse-engineered the phone's encryption system to understand its security features.