Hardness and softness, but not quite stiff lines, soft but not weak, showing a concise, simple, elegant, generous beauty.
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soft but not weak
柔而不弱
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Reference queues are not as useful with soft references as with weak references, but they could be used to raise a management alert that the application is starting to run low on memory.
引用队列对于软引用来说，没有对弱引用那么有用，但是它们可以用于发出管理警报，说明应用程序开始缺少内存。
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