我们乘坐水翼船穿越海湾，只用了普通渡轮一半的时间。

We crossed the bay on a ___hydrofoil, which took half the time of a regular ferry.

这艘船的水翼设计能在高速行驶时减少水的阻力。

The ___hydrofoil on this boat is specially shaped to reduce water resistance at high speeds.