jīng cháng
经常费用
jīng cháng fèi yòng
regular expenses; recurring costs
积肥是农业生产中的经常工作。
jī féi shì nóng yè shēng chǎn zhōng de jīng cháng gōng zuò
accumulating fertilizer is a regular task in agricultural production
他俩经常保持联系
tā liǎ jīngcháng bǎochí liánxì
The two of them often keep in touch