warmth的形容詞形式是什么

　　The weather was warm for the time of year.

　　在一年的這個時節這天氣算是暖和的了。

　　I could feel the warm sun on my back.

　　我背上感受到了陽光的溫暖。

　　It was a warm day, if not exactly hot.

　　這一天即使算不上熱，也是一個暖和的日子。

　　Birds use warm air currents to help their flight.

　　鳥利用暖氣流助飛。

　　You're always sure of a warm welcome there.

　　到了那里你肯定會受到熱烈歡迎。