Feature: Uses copyrighted chain spring with super bounce back and durable.

特点：采用专利精钢门环弹簧，超强回弹力，坚固耐力。

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As the spring will bounce after it is pressed to the bottom, we should stand up when we face the challenge.

如同弹簧遇到压力会反弹，我们在挑战到来的时候应该站起来迎接。

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As the spring will bounce after it is pressed to the bottom, we should stand up when we face the challenge.

如同弹簧遇到压力会反弹，我们在挑战到来的时候应该站起来迎接。

youdao