For transport, power grids and buildings to become more efficient, there must be rules on how, for instance, refrigerators should talk to electricity meters, and thermostats to heating systems.
要让交通、电网和建筑更加高效，必须制定规则，规定如何，比如，让冰箱和恒温器更节能。
This flow may either be conditional or unconditional; that is, there may be rules that specify conditions that must be met in order for the next activity in the process to be executed.
这个流向可能是有条件的也可能是无条件的；也即，可能有一些指定条件的规则，要执行流程中的下一个活动必须满足这些规则。
For example, if there is a use case to make a room booking, there must also be computation rules to determine the room charges.
例如，如果有一个用例是进行一个房间预订，也必须有一个计算规则来确定房间费用。
There are no rules for the photo, except that you must be in it, and your question cannot include profanity.
照片内容不作任何限制，但是照片中必须有你的身影，并且你的问题不能包含任何亵渎的成分。
On amore practical note, we do not want to have too many rules and regulations, but for the sake ofpublic safety and comfort there must be some.
从实用观点来说，我们不希望制定太多规章制度，不过出于公共安全和舒适性考虑，规章制度是必要的。
After the first move into the house there are many rules do not say you can go into it, in the new home for the first time must be something.
搬家之后第一次进屋子还有很多规矩呢！并不是说随便走进去就可以了，在进新家的第一次手上一定要东西。
There must be some rules for the changes.
这些变化中一定有规律。
In a similar way, this proposal does not seem to affect EU members as EU rules imply that there must be an equal treatment among all EU members, regardless of the sovereign ratings.
类似的，这种规定对欧盟成员国也无影响，因为欧盟的规则是对其所有的成员给予同样的待遇，而不考虑国家具体的评级。
Next, there must be a set of procedures with rules and guarantees. If it's loud voices and large fists that win support, this is not a real indicator of public will either.
其次，民意必须有一整套程序的规范和保障，只凭声音高拳头大取胜的民意，不是真正的民意；
There are basic rules that you must abide by in order to be safe. For example, never handle a weapon that you haven't inspected yourself.
这些是你必须遵守的基本规则来确保自身安全，比如从来不要使用你没亲自检查过的武器。
There are basic rules that you must abide by in order to be safe. For example, never handle a weapon that you haven't inspected yourself.
这些是你必须遵守的基本规则来确保自身安全，比如从来不要使用你没亲自检查过的武器。
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