Our shipping partner upgraded its fleet with electric propulsion to cut fuel costs.

我們的貨運合作夥伴將船隊升級為電力推進，以降低燃料成本。

The engineering team will present the new propulsion system at Friday's board meeting.

工程團隊將在週五的董事會上介紹新的推進系統。

Investors were impressed by the startup's low-cost propulsion technology for cargo drones.

投資人對這家新創公司用於貨運無人機的低成本推進技術印象深刻。