level-wind

例句：

1. 1.The sea was level-wind during the summer vacation.
   暑假期间，海面风平浪静。
2. 2. After the storm, the level-wind made it easier to sail.
   暴风雨过后，平静的海面使得航行变得容易。
3. 3. The level-wind helped the fisherman to catch more fish.
   平静的海面帮助渔民捕获了更多的鱼。