研究人员还需要一个成熟的方案来确保飞行器保持正直。
Researchers also need a sophisticated solution to make sure the robot remains upright.
保持正直说真话。
竖脊肌从头骨经背部延伸到骨盆，使脊柱保持正直。
The erector spinae, stretching from the skull to the backbone near the pelvis, hold the spine upright.
这种控制性运动能使身体保持正直，并改进步行的姿势。
This is a controlled movement that improves body alignment and walking posture.
你的身体在水中应该保持正直，挺胸、目视前方，不要过度前倾或伛偻。
Your body should be straight up in the water; don't lean forward much or hunch over. Keep your shoulders back and look straight ahead.
所以，永远不要放弃，要保持正直，因为它将是你获得报偿的缘由。
So don't ever let up or walk away from integrity, because it will be the reason for your reward.
我们坚信我们保持正直无邪的品行为客户提供最优良的网络营销服务。
We firmly believe that we maintain the integrity and innocence of the clients products to provide the best Internet marketing services.
身体俯卧于球体之上，动作如图所示。背部保持正直或保持自然弯曲状态，腿部伸直。
Lean on the ball as shown, keep the back flat or maintain its natural curve, with the legs straight.
偏执的人必然绝对相信自己是正确的，而克制自己，保持正确思想，正是最能助长这种自以为正确和正直的看法。
Paranoia of people have no doubt that he is necessarily correct, but restrained myself, thinking of the right to maintain, it is best to encourage such an accurate and honest self-views.
偏执的人必然绝对相信自己是正确的，而克制自己，保持正确思想，正是最能助长这种自以为正确和正直的看法。
Paranoia of people have no doubt that he is necessarily correct, but restrained myself, thinking of the right to maintain, it is best to encourage such an accurate and honest self-views.
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