a. 冬天的, 寒冷的

[ adj ]
characteristic of or relating to winter
<adj.all>
bears in brumal sleep

Hibernal \Hi*ber"nal\, a. [L. hibernalis, from the root of hiems
winter; akin to Gr. ? snow, Skr. hima cold, winter, snow: cf.
F. hibernal.]
Belonging or relating to winter; wintry; winterish. --Sir T.
Browne.