| 单词 | back straight |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔backwards〕Keeping your back straight, swing one leg backwards.挺直腰背，一条腿向后摆动。柯林斯高阶〔backwards〕Keeping your back straight, swing one leg backwards.背部挺直, 一条腿向后甩。外研社新世纪〔back〕Keep your head up and your back straight.抬头，把背挺直。朗文当代〔bend〕Bend your knees, but keep your back straight.膝盖弯曲，背部保持挺直。朗文当代〔bend〕Bend your knees, keeping your back straight.膝盖弯曲，背部挺直。牛津高阶〔hold〕Remember to hold your head up and keep your back straight.记住要抬头挺胸。朗文当代〔hold〕Try to hold your back straight.尽量使背部保持挺直。外研社新世纪〔keep〕Keep your back straight.把背挺直。外研社新世纪〔straight〕I went to overtake him on the back straight on the last lap.最后一圈时我在非终点直道上超过了他。柯林斯高阶〔straight〕Keep your back straight.把背挺直。韦氏高阶〔straight〕Make sure you keep your back straight.你一定要把背挺直。麦克米伦高阶〔turn〕Keep your back straight and turn your toes out.绷直背部，脚趾往外伸。麦克米伦高阶If you have to lift a heavy weight keep your back straight and bend your legs at the knees.如果你不得不举起重物的话，保持背部挺直，弯下双膝。剑桥国际Make sure you bend your knees and keep your back straight when you're picking up heavy objects.搬重物时务必屈膝直背。剑桥国际 |
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