| 单词 | up-and-down |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔butterfly stroke〕A swimming stroke in which both arms are drawn upward out of the water and forward with a simultaneous up-and-down kick of the feet.蝶泳：一种游泳姿式，双臂向上伸出水面再向前，脚同时上下拍打击水美国传统〔seesaw〕A back-and-forth or up-and-down movement, as of the lead between two contesting parties.拉锯式的动作，一起一伏的交替过程：上下或前后交替移动的动作，如比赛或竞争双方交替占优势美国传统〔swing〕These verbs mean to move in a back-and-forth, up-and-down, or to-and-fro pattern.这些动词表示前后、上下或往复运动。美国传统〔time〕She kept time to the rhythm of her sentences with an up-and-down movement of the right arm.她的右臂按着她所念句子的节奏一上一下地挥动。 英汉大词典〔turkey trot〕A ragtime dance characterized by a springy walk with the feet well apart and a swinging up-and-down movement of the shoulders.火鸡舞：一种繁音拍子的舞蹈，其特点是双足充分分开，有弹性地舞步，双肩上下摇摆扭动美国传统An up-and-down economic growth pattern is emerging.上下波动的经济增长模式正在显现。牛津商务 |
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