Phy
abbr. 物理层；物理层协议（Physical Layer）
🗣️ 情景例句
Do you have a children's menu?
你们有儿童菜单吗？
Health and understanding are the two great blessing of life.
健康和融洽是人生两大幸事。
At night, the children always do their homework.Then they go to bed.
晚上，孩子们总是做作业，然后去睡觉。