VOA慢速英语:日本将在2020年奥运会上使用机器人助手

javelin(s) – n. an object that has a long straight handle and a sharp point that people throw as far as they can as a sport

discus(es) – n. a heavy flat round object that people throw as far as they can as a sport

screen – n. the usually flat part of a television or computer monitor that shows the images or text

torch - n. a long stick with material at one end that burns brightly

artificial intelligence – n. the power of a machine to copy intelligent human behavior

leverage – v. to use something valuable to get a desired result

three dimensional – adj. having or seeming to have length, width, and depth

in a row – n. following one after another

battery – n. a device that is placed inside a machine, such as a clock, toy, or car, to supply it with electricity

taxi(s) – n. a car that carries passengers to a place for an amount of money that is based on the distance traveled