Fuel consumption and pollution might be reduced by smoothing traffic flow and running vehicles close enough to each other to benefit from aerodynamic drafting.
车流通畅，相互紧随行驶的车辆能利用前车产生的较小的空气阻力，这些都可能减少油耗和污染。
In other words, the law provides a kind of standard contract that enables the costs of negotiating and drafting a private contract to be avoided.
换言之，婚姻法为夫妻双方提供了标准合同，从而避免了双方谈判与缔约的成本。
By drafting a to-don't list, you can be more confident that the items you are saying no to truly can wait, or can be done by someone else other than you.
列出一个选做清单，你可以更自信的拒绝那些真正可以放一放的事情或者别人更加能胜任的事情。
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