If you're standing nearby, the birdhouse will also give you a free Wi-Fi connection—but only if pollution level is low enough.
如果你站在附近，鸟舍也会给你免费 Wi-Fi 连接，但前提是污染水平得足够低。
Peretti says the Times shouldn't waste time getting out of the print business, but only if they go about doing it the right way.
佩雷蒂说，《纽约时报》不应该把时间浪费在终止印刷业务上，而应该采取正确的方式去解决这件事。
Agrillo's team found that mosquitofish can discriminate between numbers up to 16, but only if the ratio between the fish in each shoal was greater than 2:1.
阿格利罗的团队发现，食蚊鱼最多可以分辨大到16的两个数字的大小，但前提是每个鱼群中鱼的比例大于2:1。
Honey made from such nectar can cause the effects the texts describe, but only if eaten fresh since the honey loses its toxicity within a few weeks of being made.
用这种花蜜制成的蜂蜜会产生书上所描述的效果，但只有在新鲜食用的情况下才会如此，因为蜂蜜在制作几周内就会失去毒性。
Parents end up treating tablets as precision surgical instruments that might perform miracles for their child's IQ and help him win some great robotics competition but only if they are used just so.
父母们最终把药片当作精密的外科手术器械，这种器械可能会为孩子的智商创造奇迹，帮助他在一些大型机器人竞赛中获胜，但前提是它们的使用要恰当。
Dark patterns also can be addressed on a self-regulatory basis, but only if organizations hold themselves accountable, not just to legal requirements but also to industry best practices and standards.
黑暗模式也可以在自我监管的基础上得到解决，但前提是各组织要自己担负起责任，不仅要遵守法律要求，还要遵守行业最佳实践和最高标准。
It can yield untold benefits, but only if people use it wisely.
科学进步可以产生无限的好处，但只有在人们能够明智地利用科学进步的时候才行。
Note: Your anger can be useful, but only if you express it in a helpful way.
注意：只有当你以积极的方式表达愤怒时，你的愤怒才可能产生正面的作用。
Dressing for work can be a battle, but only if you don't know what you're doing.
为工作着装就跟打仗似的，除非你不知道你在干嘛。
Marty finally agreed, but only if Fred would go there with him to give him courage.
马蒂最终同意了，但是要求佛瑞德和他一起去，给他鼓气。
For example, a rule might select links, but only if they are within a paragraph tag.
例如，一个规则可以只选择段落标记内的链接。
More gaming may actually be better but only if parents play along, a new study finds.
但新的研究表明，只要在家长陪同的情况下，多一点游戏时间，事实上可能更好。
But only if Paley finds the financial backing which he failed to obtain 10 years ago.
但条件是帕雷能找到10年前他没能得到的经济支持。
Sharing your bed can reduce your brain power - but only if you are a man, say scientists.
科学家提示：如果你是男性，和伴侣同床共枕会使你的脑力下降。
James reiterated that forking can be a good thing, but only if the results are merged back.
詹姆斯重申了自立门户可以变成一件好事，只要开发成果能够回归。
So that to the ancient Romans at least hyenas were looked up to, but only if they were dead.
因此，古罗马人认为鬣狗值得尊敬，不过只有在它们死掉以后。
This would normally invalidate their posts but only if it is spotted by the quality control team.
只有被质量控制小组发现，否则这些帖子是可以计入有效发布的。
A delegatee can recall a message from another user’s mail file, but only if the delegatee sent it.
被委托者可以从其他用户的邮件文件中收回邮件消息，但是只有当由被委托者发送邮件时才能执行此操作。
The XP practices can help change people's minds, but only if those people start using the practices.
XP实践可以帮助人们改变思维，但是只有当他们开始使用这些实践时才会有帮助。
Your body can burn flab while you sleep, but only if it isn't too busy processing a full stomach.
在睡眠过程你的身体也会燃烧脂肪，除非它被忙于处理一个填饱的胃。
Marriage can be wonderful, but only if you are entirely aware of your individual, unique circumstances.
结婚可以很幸福，但只有当你完全清楚自己个人的独特处境才奏效。
The summiteers can make progress, but only if they temper their hyperbole with realism and humility.
但与会者只有使用务实精神和谦虚态度调整他们的夸夸其谈，会议才能取得一些实质性进展。
The Chinese may very well on occasion be direct but only if no one, including themselves, will lose face.
中国人有时也可能比较坦率，但是只有当所有人不会因此而丢脸的时候，他们才会这样做。
This, says Fishman, will change — but only if technology at water utility companies starts to improve.
菲什曼说，只有自来水公司的技术得以改进，这种情况才将改变。
My head count indicated we would win in the committee by a single vote, but only if all our votes showed up.
按人头算，我们在委员会里只有一票的优势，但条件是我们所有的人都必须到场。
The World Bank said the money would sustain the momentum of change but only if coupled with real reform.
世界银行称，这笔资金将维持变革的势头，但是只有在与真正的变革相结合的情况下。
That's handy, but only if you don't care about preserving the original order of the unique lines in the file.
如果您不在意保存文件中唯一一行的原始排序，这是非常方便的。
Below those building blocks are some sample meals you can use, but only if you love these foods like I do.
每种饮食都附带一些你可以试试的简单菜谱，当然，前提是你也很喜欢这些食物。
Below those building blocks are some sample meals you can use, but only if you love these foods like I do.
每种饮食都附带一些你可以试试的简单菜谱，当然，前提是你也很喜欢这些食物。
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