Models need to be precise and complete, and they also need to provide abstraction, which is the reason why graphical modeling is recommended.
模型需要准确和完整，而且还需要提供抽象，而正是由于这个原因，我们建议使用图形建模方法。
They were also pioneers who carried with them everything they would need to build new lives—their livestock, taro seedlings and stone tools.
他们也是先驱者，带着一切建立新生活所需的东西——他们的牲畜、芋头苗和石器。
We also need to clean up spills as soon as they occur, and store food in air-tight containers.
我们还需要尽快清理溢出的液体，并将食物储存在密封的容器中。
Warming changes key characteristics of the ocean and can affect phytoplankton growth, since they need not only sunlight and carbon dioxide to grow, but also nutrients.
气候变暖改变了海洋的主要特征，并会影响浮游植物的生长，因为它们不仅需要阳光和二氧化碳才能生长，而且还需要营养。
It is important to point out that students also need to have a deep understanding of their own culture before they can begin to observe, analyze and evaluate other cultures.
需要指出的是，学生在开始观察、分析和评价其他文化之前，也需要对自己的文化有一个深刻的理解。
You also need to ascertain why they need your product; for what specific purpose, under what circumstances, and why would they choose yours?
你还需要弄清为什么他们需要你的产品；为了什么特殊的目的，在什么情况下，还有为什么他们会选择你的产品？
But they also let you know what you need to spend more time studying, and they help make your new knowledge permanent.
但他们同时也让你知道你需要花更多的时间学习，并帮助他们，使你的新知识，新常任理事国。
They also need to know the strengths and limitations of SOA apply that knowledge to their solutions.
他们还需要知道SOA的优缺点，并把这种知识应用到他们的解决方案之中。
But they can definitely determine how they plan to grow as more people move in, and also how they want to rehabilitate areas that need regeneration.
但它们确实可以决定怎样在更多的人迁移进来的同时计划它们的增长，以及它们希望怎样修复需要重建的区域。
They may also begin to need to do more and more of the activity over time to feel the effects, and experience physical and psychological withdrawal symptoms if they can't do it.
他们也可能开始时需要在一段时间反复重复这种活动才能感觉它的效果，如果他们无法继续，就会出现戒毒那样身体上和心理上的综合反应。
They also emphasize the ongoing need to improve the collection, analysis and publication of critical public health information.
报告作者还强调，当前需要加强对关键公共卫生信息的收集、分析和发表。
It can also help younger babies develop the muscle strength they will need to crawl and walk.
婴儿舞还可以帮助小宝宝们锻炼肌肉力量，有助于他们将来爬行和走路。
But to keep charging ahead at full steam, they also need to be vigilant about their health, which means eating and drinking right.
但是全力保持高水平状态的同时，他们也需要时刻关注自身的健康，那就意味着正确的饮食和补水。
Teams are free to choose how many sub-feature streams they need, if any, and they are also free to choose how often they want to deliver their changes to an integration stream.
团队可以自由选择他们需要多少的子特性流，如果有够多的流的话，同时它们也可以自由选择多久向集成的流，交付他们的变更。
However, the couple both work full time in London, which means they have steep travel costs and also need to employ a part-time nanny.
然而，这两口子都在伦敦做全职工作，这意味着他们要支付极高的交通费用，还得请一位兼职保姆。
You also need to keep in mind any system recovery procedures and infrastructure in case they are affected.
还需要记住任何系统恢复过程和基础架构以防它们受到影响。
Children are altruistic by nature, "he writes, and though they are also naturally selfish, all parents need do is try to tip the balance toward social behavior."
“孩子本质上是无私的，”他写道，虽然他们也是天生自私的，家长需要做的只是努力打破两者之间的平衡，使之趋向于社会行为。
Users also have to pay $25 a month for unlimited calls. And they need a high-definition television set as well as a fast internet connection to get good results.
用户每个月必须缴纳25美元以享受无限时通话，并且他们需要有台高清电视和互联网接入，以期能达到更好的通话质量。
So huge market opportunity and huge opportunity also for individuals to truly get the documents they need.
所以有巨大的市场潜力，巨大的商机,让个人真正得到需要的文件。
They also need support to prevent and overcome breastfeeding difficulties and deal with competing demands on their time.
她们也需要获得支持，以预防及克服母乳喂养方面的困难，并处理好母乳喂养的时间问题。
They also stressed the need for Pakistan to sustain its current growth and make it equitable and the need to provide jobs and attack hunger and poverty.
他们还强调巴基斯坦需要保持目前的增长速度，增加公平性，并需要创造就业和解决贫困饥饿问题。
The job center wants its Santas to be child-friendly, good organizers, reliable and have acting skills. They also need a clean police record.
招聘机构要求圣诞老人必须对孩子友好、组织能力强、可信任并有表演才能，并且要无犯罪记录。
The job center wants its Santas to be child-friendly, good organizers, reliable and have acting skills. They also need a clean police record.
招聘机构要求圣诞老人必须对孩子友好、组织能力强、可信任并有表演才能，并且要无犯罪记录。
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