例句：The superiority of this design is full-featured, small size, low power-consumption and easy upgrade.
該設計體現了功能齊全、體積小和功耗低等特點，有利於系統硬件升級。
upgrade 英[?p?gre?d] 美[?p?ɡred]
n. 向上的斜坡;
vt. 提升; 使（機器、計算機系統等）升級; 提高（設施、服務等的）檔次; 提高（飛機乘客、旅館住客等）的待遇;
[例句]You can upgrade from self-catering accommodation to a hotel.
您可以將自理膳食旅店升級為酒店。