hái / zi / men / dài / hǎo / tóu / kuī / hòu / xīng / fèn / de / zuò / jìn / le / kǎ / dīng / chē孩子们戴好头盔后,兴奋地坐进了卡丁车。After putting on their helmets, the children excitedly got into the go-karts.