2-d
二维的\\n平面的\\n二元的（two dimensional）
🗣️ 情景例句
The little boy held his mother's hand firmly when crossing the street.
那小男孩过马路时紧抓着母亲的手。
John has extracurricular activities. He's on the football team.
约翰有课外活动。 他参加了足球队。
Could I have those two tickets, please?
这两张票给我行不行？