The typhoon caused serious damage to our school.
颱風對我們學校造成了嚴重的損害。
He has a serious fever and needs to rest at home.
他發高燒很嚴重,需要在家休息。
This is a serious problem for our class project.
這對我們的班級專題來說是個嚴重的問題。
Her leg injury is serious, so she can't play today.
她的腿部受傷很嚴重,所以今天不能上場。