You are permitted to try to attract attention, but there are rules about how to do this.
酒保有本领知道该轮到谁了。你可以做些动作引起酒保的注意，但有规可循。
People speak freely to each other on the Internet but there are rules. Netiquette requires that people should be polite in their exchanges.
人们可以在网上自由交谈，但网上也是有规则的。网上礼节要求人们以礼相待。
Many British teenagers have part-time jobs to earn a bit of money, but there are rules about how many hours they can work and what the minimum age is for certain jobs.
很多英国十来岁的青少年都作一些钟点工来赚些零用钱，不过他们的工作时间和合格从事某些工作的最低年龄在英国都有严明的制度规定。
There are no hard and fast rules, but rather traditional guidelines as to who pays for what.
关于谁来支付什么费用并没有一定要遵守的规定，只有传统的准则。
There are many different languages in the world, but they are all bound by similar rules.
世界上有许多不同的语言，但是它们都受到相似的规律限制。
These operations could share a common transaction, but there are strict rules about the order in which queries and DML operations are performed.
这些操作能分享共有的事务，但是在查询和DML操作的执行顺序上有一些严格的规则。
There are no official rules, but the reality is that a joint venture is better than wholly owned foreign business.
尽管还没有正式的规则，但事实显示合资企业优于外国独资企业。
I expressed doubt. (there is a Ping-Pong season?) But that lead me to wonder - are there any general rules of thumb about when the best time is to buy stuff?
我表示怀疑。(存在乒乓季么？)但是这让我想知道——存在最佳买东西的一般规律么？
There are rules and training programs for almost every conceivable job, from sanitation engineer to nuclear physicist, but no set curriculum teaches you how to be a boss.
几乎每个能想得到的职位，从环卫工程师到核物理学家，都有一定的规则和培训课程，但是，却没有特定的课程，教你如何成为一个老板。
There are other pitfalls to avoid, but the bottom line is this: Play by the lenders' rules to get them to open their checkbook, but protect yourself at the same time.
还存在一些其他可以避免的错误，但是底线是：保护你自己的利益的同时一定按照投资者的方式来经营，这样才能让他们给你投钱。
As I've argued before, the app Store's biggest problem is not that there are rules, but that app creators don't know what the rules are.
正如我之前提出的那样，软件商店最大的问题不在于有条款限制，而在于软件创作者不知道这些条款是什么。
Financial markets have an enormous capacity for flexibility, but market participants need to be sure that there are rules, and a referee willing to impose them.
金融市场具有极强的灵活性，但市场参与者需要确定“市场存在规则”，并且仲裁人愿意实行这些规则。
There are plenty of other technology rules to keep in mind, but these six go beyond the traditional guidelines of having a website and making sure your technology is secure.
当然我们身边还有很多值得关注的新技术使用规则，但这六条箴言已经完全突破了两条传统技术应用指导：搞个网站，然后注意技术安全。
New rules reducing nitrogen emissions from farms are introduced next year, but there are questions over whether these will be strict enough or properly enforced.
明年将出台减少农场氮排放的新规，但问题是这些条款是否足够严厉，能否施行恰当。
It may not seem like it when commuters are shouting down their cell phones to the dismay of other passengers but most Americans believe there are unspoken rules about mobile phone etiquette .
在上下班的路上打手机声音太大把别人吓到，你可能难以相信，但大多数美国人认为使用手机还是有一些不成文的礼节。
One can argue about the freedom of press but rules are rules in different places and if you don't follow them, there will be no pictures and no witness report.
一个人可以争辩新闻自由，但是不同的地方有不同的规矩，如果不遵守，就得不到一手的照片和采访资料。
But when you define ri constraints, keep in mind that there are rules in place to safeguard data integrity when DML operations are performed against related tables.
但是在您定义RI时，要记住，当对相关表执行dml操作时，需要一些规则来保护数据完整性。
Such issues have been raised in America, too, but energy firms there have been able to ignore them because they are exempt from many environmental rules.
这类问题也在美国被提出过，但能源公司们由于不受多项环境法制约，致使他们已经可以忽略这一问题了。
It will not be easy for them to meet the new rules without increasing the cost of their cheap, low-margin cars, but they are close enough to be confident that they can get there.
对他们来说，让薄利的小汽车达到新的排放标准不需要增加多少成本，而且他们本来就很接近新标准了。
There are no explicit grammatical rules, but the system still implements the grammatical judgment that was known to the native speakers who created all the example phrases.
这里并没有明确的语法规则，但是系统仍然能够实现符合实例语法的决策。
But that lead me to wonder - are there any general rules of thumb about when the best time is to buy stuff?
但是这让我想知道——存在最佳买东西的一般规律么？
In most jurisdictions, there are no hard and fast rules but the overall guidance on ethics relating to objectivity and independence should be adhered to.
在大多数司法管辖区都没有硬性规定，但与客观性和独立性相关的道德总体指导必须是要遵守的。
In most jurisdictions, there are no hard and fast rules but the overall guidance on ethics relating to objectivity and independence should be adhered to.
在大多数司法管辖区都没有硬性规定，但与客观性和独立性相关的道德总体指导必须是要遵守的。
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