VOA慢速英语:特斯拉推出电动卡车并升级了跑车

maintenance – n. act of keeping property or equipment in good condition by making repairs, correcting problems, etc.

reserve – v. make arrangements to be able to use or get something at a later time

automatic – adj. having controls that allow something to work or happen without being directly controlled by a person​

lane – n. part of a road marked by painted lines and used for a single line of vehicles

autonomous – adj. engaging in an activity separately from other things

emission – n. the act of producing or sending out something (such as energy or gas) from a source​

second-generation – n. a second line of a product or products that represent improvements over the first

regular – adj. happening or done very often​