upwind leg

例句：

1. 1. The team's performance was affectedby the updraft leg during therace.
   团队在比赛中受到上升气流腿的影响。
2. 2. The pilot adjusted his altitude to avoidthe updraft leg.
   飞行员调整了他的高度，以避免上升气流腿。
3. 3. The weatherforecast indicated that there would be a strongupdraft leg in the area.
   天气预报显示该地区将出现强烈的上升气流腿。