adj.無風(fēng)的；平穩(wěn)的
It's windless and warm in the morning. 早晨，幾乎無風(fēng)，很暖。
Windless weather and favorable tides were required for the landing operations. 無風(fēng)的天氣和有利的潮汐是登陸行動(dòng)所必須的。
