These unstable joints are very difficult to correct once they deviate from the normal, straight position.

这些不稳定的接头一旦偏离正常的直线位置就很难校正。

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In the 1920s, divers grew tired of the slow rotation from rigid take-offs starting with a straight position.

20世纪二十年代时跳水运动员厌倦了缓慢的旋转动作，这是由僵硬的起跳加直体姿势造成的。

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In order not to let the wrist flexion, can put a support at the bottom of the wrist to keep the wrist straight position.

为了不让腕部过度弯曲，可以在手腕下方放一个支撑物来保持腕部的平直位置。

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And if we do, in fact, hit it with light to get the electrons off, it will go back to the straight up in position, or if it gets knocked hard enough it does that, too.

而且如果我们这么做，事实上，用光轰击它以逐出电子，它就会在原位置沿直线返回，或者如果它被撞击的足够猛烈,也会出现上述现象。

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