The alarm signal is no longer a single before beeps instead of the beautiful music.
而报警信号不再是以前单一的嘟嘟声，代替的是优美的音乐。
They were now just a luxury item, no longer as necessary as they were before.
如今它们对我们来说就成为一种奢侈品，不再像以前那般必要了。
They were now just a luxury item, no longer as necessary as they were before.
如今它们对我们来说就成为一种奢侈品，不再像以前那般必要了。
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