adj.秋天的
The day was warm, autumnal, and rainy. 时值温和的细雨濛濛的秋天。
I feel a little cool in the autumnal night. 在秋天的晚上,我感到一丝凉意。
The weather in June was positively autumnal. 那六月的天气真像秋天似的。
adv.秋季地