We kept our eyes on the ball to maintain the retainership with our clients.

我们时刻注意保持与客户的关系。

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Lean on the ball as shown, keep the back flat or maintain its natural curve, with the legs straight.

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。

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It will place both arms on a table to maintain its balance when trying to sit down in a chair, or use one arm for support when taking a big swinging kick at a ball.

它坐在椅子时会把双手扶住桌子以保持自己平衡，或用力踢一个球时会用一个手扶住物体来支承。

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Sell majority ownership in the Mets and maintain a minority stake in the ball club while still preserving their ownership in SportsNet New York.

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Since keeping the ball stable requires abdominal strength and concentration, distracted workers may not maintain good posture or end up rolling onto the floor.

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