坐着的时候后背要挺直。
Keep back straight and bend knees.
背要直，只弯两膝。
You should keep your back straight.
你应该把后背挺直。
She held her head erect and her back straight.
她昂着头，把背挺得笔直。
Our teacher always keeps his back straight.
我们的老师总是把背挺得笔直。
Bent your knees, but keep your back straight.
屈膝，保持背部挺直。
Sit with back straight, hands at side on floor.
坐姿后背伸直，手放于身体两侧的地面上。
Keep your back straight. Thighs tight and shoes right.
保持你的腰背挺直，大腿绷紧和鞋子穿对。
Sit with knees bent, feet flat on floor, back straight.
屈膝坐立，保持后背伸直，脚平贴地面。
Your head should be up, your back straight, and shoulders level.
你的头应该抬起来，你的背部笔直，肩膀水平。
Sit or lie down comfortably with your back straight and close your eyes.
找一个舒适的地方躺下或坐下，背部平直，闭上你的眼睛。
Keep your head upright, shoulders horizontal, chest broad, back straight.
头容正，肩容平，胸容宽，背容直。
Sit in a comfortable position with your back straight, and close your eyes.
在一个舒服的地方坐下，挺直腰板，然后闭上你的眼睛。
Sit with back straight, legs in front, slightly spread with knees straight.
坐姿背伸直，腿于身前，膝关节伸直稍稍分开。
Let the baby lie face down on the bed, keeping the back straight and relax.
让宝宝俯卧于床上，背部保持平直，放松。
Some debtholders did not get their money back straight away, a technical default.
一些债务持有人没有直接拿到他们的钱，这是技术上的违约。
When you lift, squat close to the object with your back straight and head up.
当你要搬运重物时，你应该在它附近蹲下来，并挺直你的背，抬起你的头。
Lie on right side, keeping back straight and neck supported with right hand as shown.
右侧卧，保持背部伸直，右手像图示一样支撑颈部。
Standing straight with your feet shoulder-width apart, slowly lower your body, back straight.
双脚分开站立，与肩同宽，缓慢下蹲，背部挺直。
The most effective way to walk is the natural way. Keep your head high and your back straight .
自然地行走是最有效的步行，要保持抬头挺胸的姿式。
Find a comfortable chair or bench and sit with your back straight and your feet flat on the floor.
找一个舒适的椅子或板凳，直背而坐，双脚平放于地面。
His vision is just straight forward to go out again with back straight and did not bring back anything to.
他的眼光只是直着出去，又直着回来了，并没有带回什么东西来。
Many people would look back on Dell and say, "You went straight up."
很多人回头看戴尔的时候会说：“你们直线上涨。”
Some are swept back by radiation pressure from sunlight to create straight dust streaks.
其中的一些碎片受阳光的辐射压力作用形成与周围星尘不同的直条状。
Years before, men had dug the mine shaft straight back into the mountain.
几年前，人们开挖这个笔直地退进山里的这个矿井。
Keep your upper back and neck comfortably straight.
保持后背上部和颈部舒适挺直。
Straight is coming back strongly. It's straight, but it's a different straight.
直发正在强力回归，但如今它已是另一种‘直’的理念了。
Fly your Vikings straight back to the base for repairs.
你的维京人直接飞回基地维修。
While at work, sit upright, with a straight-back, in your chair.
工作时可以坐直，坐在椅子上要挺直腰杆。
While at work, sit upright, with a straight-back, in your chair.
工作时可以坐直，坐在椅子上要挺直腰杆。
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