southwesterly

1.The ship held to a southwesterly course.

船继续沿西南向前进

2.The wind is blowing southwesterly.

风从西南吹来。

3.As the plane exited the storm into the prevailing southwesterlies, there was a rapid increase in both the head wind and updraught.

其后航机雨区进入盛行西南风带时，逆风和上升气流均迅速加强。