Put a tennis ball between your shoulder blades and try to squeeze the ball.

还将一个网球放在肩胛骨处，然后学员得努力地挤压那个球。

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I can't play tennis today, I've put my shoulder out.

今天我不能打网球了，我的肩部脱臼了。

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The tape is used to prevent excessive protraction injuries, for example, shoulder problems from activities including playing tennis.

这种贴布能防止过度拉伤，比如打网球等造成的肩膀问题。 。

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"The shoulder, it's a huge part of the tennis game, " she told Open Court.

CNN: Sharapova: Struggles made me stronger

My first brush with Australian tennis royalty came in a swimming pool in Marrakesh of all places, when I found myself shoulder deep in water alongside a ridiculously handsome man who introduced himself, after a bit of nosy prodding, as a "retired sportsman".

BBC: Just the Tomic