Because if Derek drives very close to the wind, that difference in speed goes to zero.

因为如果德里克非常靠近风向行驶，速度差就会为零。

But you don't like him yourself, my lady. You never wanted him...-You're sailing perilously close to the wind, O'Brien.

可您也不喜欢他，夫人，从不想让他...-不得放肆，否则就越界了，奥布莱恩。

To sail close to the wind, to take risk.

迎风航行， 勇于冒险。

To sail close to the wind.

迎风航行。

It's called bearing away or bearing up into the wind. If I turn away from the wind or go closer to the wind.

它被称为带走或带入风中。如果我远离风或靠近风。