play with pieces of string玩: play; have fun; amuse onesel ...线段: segment; line segment线段: [数学] segment; line segment主线段, 干线段: main section闭线段: closed segment下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:玩线段，即可在微信中查询翻译
