- 重点词汇
- 老年人
old people; elderly people; the old/aged; senior citizen
- 电脑
computer; laptop; electronic computer; electronic brain; electron brain; personal computer; PC
- 视频
video; video frequency; visual frequency; vision frequency; recording; videotape; video record
- 教学
teaching; instruction; pedagogy; tuition; instructional; pedagogical; teach; conduct teaching