When engines are required an electrically powered water jet can be fired from below the stern to propel the boat forward.
当需要引擎时，一道电动水射流可以从船尾下面点火推动船前进。
2
From the diving submarine, you change to tiny jetboat and ride along close to the bottom of the ocean, almost as you would skim over the land in an airplane.
离开下潜的潜艇，你改乘一艘微型喷气式游艇贴近海底前进，几乎像你坐在一架飞机里在陆地上空掠过一样。
3
As I went under the water, I felt the boat skidding over my shoulder like a jet.