noun 下载 🔗分享 伸缩笔 A retractable pen. Examples : "My father uses a retractable pen for signing documents at work. " 我父亲在工作时用伸缩笔签署文件。 stationery item 与AI对话词汇游戏阅读练习
adjective 下载 🔗分享 可伸缩的,可缩回的 Capable of being retracted; retractile. Examples : "The pen has a retractable tip, so you can click it to hide the point when you're not writing. " 这支笔有一个可伸缩的笔尖,所以不写字的时候,你可以按一下把它收回去。 technical device machine technology function 与AI对话词汇游戏阅读练习