Scapula retraction is a fancy way of saying to squeeze your shoulder blades together.
肩胛骨往回收也就是说将你的肩胛往后挤到一起。
Immediate retraction rate of skin.
皮肤的即时回缩率；
Instant retraction of messages and attachments even after the message has been read.
即使邮件内容已被阅读，也可即时撤回邮件和附件。
Nowadays a lot of countries have provided legal protection for the authors right of retraction.
目前许多国家知识产权法都规定作者享有收回权。
Retraction will be required and should be as gentle as possible.
还需要牵引，要尽可能轻柔。
Retraction will be required and should be as gentle as possible.
还需要牵引，要尽可能轻柔。
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