Most severe thunderstorms form when humid north-easterly air converges with drier northwesterly airflows.大多数强雷暴都是在潮湿的东北风与较干燥的西北气流交汇时形成的。They sailed in a north-easterly direction.他们朝着东北方航行。After rounding Cape Finisterre the boats ride the north-easterly trades.绕过菲尼斯特雷角之后，这些船开始在东北信风的吹送下破浪前行。