春季 + Noun
The noun 春季 (chūnjì) means "spring season" and is a slightly more formal term than 春天. It is often used as a modifier before other nouns, as in 春季舞会 (spring dance). It refers to the season of spring in general.
春季是出去旅行的好时候。
chūnjì shì chūqù lǚxíng de hǎo shíhòu.
Spring is a good time to go traveling.
学校的春季运动会下周举行。
xuéxiào de chūnjì yùndònghuì xià zhōu jǔxíng.
The school's spring sports meet will be held next week.
今年春季的雨水特别多。
jīnnián chūnjì de yǔshuǐ tèbié duō.
There has been especially a lot of rain this spring.