essentially

Although the two computer models look different on the outside, they are essentially identical in terms of hardware.

(Chinese) 虽然这两款电脑型号外表看起来不同，但在硬件方面它们本质上是完全一样的。

The detective argued that while the suspect had an alibi, his motive remained essentially unchanged throughout the investigation.

(Chinese) 侦探认为，尽管嫌疑人有不在场证明，但其动机在整个调查过程中基本上保持未变。