translation.en: And we didn't like that, so we actually, in maybe a couple of weeks, we built these little enclosures that enclosed the projectors, and so we can leave them on all the time and they're completely silent.
translation.zh: 我们不喜欢那样，实际上 我们用了两三周的时间制作了这些投影仪的小附件， 那么现在我们可以一直让投影仪开着， 而它们完全没有噪音。