Adjective:

1. without or almost without wind;

   "he prefers windless days for playing golf"
   

Windenn.温登(在德国；东经 8º07' 北纬 49º06')windn.风；（随食物或饮料）吞下的气；呼吸；气息；管乐器；<口>空谈v.使喘不过气来；（给婴儿轻轻拍抚后背）使打嗝；吹(号角等)；（路、河等）蜿蜒；缠绕；给…上发条；可上发条；倒（磁带、胶卷等）；转动（把手）n.弯曲；弯曲处；缠绕；转动；上发条wind-cold type风寒型wind-toothache风疰牙痛, 风齿, 风牙wind-up roller收丝筒wind coefficient风系数winding terminal绕组出线端windshield visor正面风挡玻璃的透明保护板wind-cold evil风寒邪气wind-oil ratio风油比wind-borne Dust风载尘wind speed revise风速修正

1. It's windless and warm in the morning.
   早晨，几乎无风，很暖。
2. Windless weather and favorable tides were required for the landing operations.
   无风的天气和有利的潮汐是登陆行动所必须的。