第一句就是啊,认真看…… Children under age 8 must be properly buckled into a carseat or booster in the back seat. Children age 8 or older, or who are 4’9” or taller, may use the vehicle seat belt if it fits properly with the lap belt low on the hips, touching the upper thighs, and the shoulder belt crossing the center of the chest. If children are not tall enough for proper belt fit, they must ride in a booster or car seat http://www.cdph.ca.gov/HealthInfo/injviosaf/Documents/ParentBrochure-English.pdf
Children under age 8 must be properly buckled into a carseat or booster in the back seat.
Children age 8 or older, or who are 4’9” or taller, may use the vehicle seat belt if it fits properly with the lap belt low on the hips, touching the upper thighs, and the shoulder belt crossing the center of the chest. If children are not tall enough for proper belt fit, they must ride in a booster or car seat
http://www.cdph.ca.gov/HealthInfo/injviosaf/Documents/ParentBrochure-English.pdf