seriousness

嚴重性、嚴重程度

Few people understood the seriousness of the water shortage at first.

起初很少有人了解缺水問題的嚴重性。

嚴肅、認真

She spoke about the plan with a seriousness that surprised everyone.

她談起這個計畫時的認真態度讓大家都很意外。

說真的、老實說口語

In all seriousness, you should see a doctor about that cough.

說真的，你那個咳嗽應該去看醫生。