If someone is or feels under the weather, they feel ill,not completely well
Examples
I'm feeling a bit under the weather - I think I'm getting a cold.
我覺得有點不舒服,我想我感冒了。
I noticed that the cat was looking a little under the weather.
我注意到那隻貓看起來有點不舒服。
Jennifer was feeling a bit under the weather today, so she chose to take the day off.
詹妮弗今天感覺不太舒服,所以她決定請一天假。
When Harley found out that his girlfriend was feeling under the weather, he decided to bring her flowers to cheer her up.
哈利發現他的女朋友身體不舒服時,他決定給她帶些花來讓她高興起來。
Whatever happens tomorrow, we had today.
不管明天會發生什麼,我們還有今天。