| 例句 |
He walked at a rapid pace with his back straight and his head held erect.他昂首挺胸地快步而行。Try to hold your back straight.尽量使背部保持挺直。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。Keep your head up and your back straight.抬头，把背挺直。Keep your back straight.把背挺直。Remember to hold your head up and keep your back straight.记住要抬头挺胸。Keep your back straight and turn your toes out.绷直背部，脚趾往外伸。Make sure you keep your back straight.你一定要把背挺直。Keeping your back straight, swing one leg backwards.挺直腰背，一条腿向后摆动。 |