Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.
此外，他们说，这是研究人员收集各种观测资料的最佳方式，而这些资料是加快发现或确定大规模趋势所必需的。
The dancers in these ceremonies wear masks, headdresses, and costumes that they believe are necessary to influence gods.
参加这些仪式的舞者戴着面具、头饰和服饰，他们认为这些是影响神的必要条件。
The alloted money could be used for travel expenses, to attend a conference for example, or things like supplies, research equipment, resources that are necessary to conduct the research.
分配的资金可以用作差旅费，例如参加会议的差旅费，或用以购买物资、研究设备、进行研究所需的资源等。
Vegetables are necessary in our daily life.
蔬菜是我们日常生活中的必需品。
How many steps are necessary for making mashed potatoes?
做土豆泥需要哪些步骤？
Many of the chemicals in food are necessary parts of a healthy diet.
食物中的许多化学物质是健康饮食的必要组成部分。
Warm clothes and a blanket are necessary for our survival in the Sahara.
暖和的衣服和毯子是我们在撒哈拉生存所必需的。
Lanterns are necessary decorations during important festivals such as the Chinese New Year.
灯笼是中国新年等重要节日中必不可少的装饰。
Not all disasters are caused by engineering design. Improvements on engineering works are necessary.
并不是所有的灾难都是由工程设计引起的，改进工程建设本身很有必要。
Zhu believed that there's no shortcut to success, and sometimes dull efforts are necessary.
朱认为，成功没有捷径，有时枯燥的努力是必要的。
They begin to think about whether plastic straws are necessary or not when drinking drinks.
他们开始考虑喝饮料时是否有必要使用塑料吸管。
Arcing horns and lightning arresters are necessary because lightning strikes to the mast are common.
灭弧角和避雷器是必需的，因为雷击桅杆是很常见的。
Alternative input devices are necessary for Mobility-impaired individuals.
对于行动不便的群体来说，替代性的输入设备是必需的。
In this process, some of the variables are primary elements that are necessary for input, while others are optional.
在这一过程中，一些变量是基本的元素，是必须输入的，而其它一些却是可选的。
These changes are necessary to enable integration, and to provide links between the two products.
为允许集成和在两个产品间提供链接，这些变更是必需的。
"These actions are necessary and they are important and the markets are adjusting to them," he said.
他说：“这些行动是必需的、也是重要的，而市场正在进行调整以适应这些变动。”
Mutexes are necessary tools for threaded programs, but they can't do everything.
互斥对象是线程程序必需的工具，但它们并非万能的。
Also note that in this case, existing reports should be analyzed to see if changes are necessary.
在这种情况下还请注意，应该分析现有报告以便查看改变是否有必要。
For example: sleeping and eating are necessary but watching TV is unnecessary.
比如：睡觉和吃饭是必要的，而看电视是不必要的。
Solid security arrangements on the ground are necessary not only to protect the peace, they are necessary to protect Israel in case the peace unravels.
可靠的土地安全协定是必要的，它不只是为了维护和平，万一和平破坏了它们还必须保护以色列。
In this creative field, an inherent artistic ability and eye for detail, color, balance, and proportion are necessary.
在创意领域，内在的艺术才能和对细节、颜色、平衡和协调的观察能力是必须的。
Sometimes, he says, such editorial decisions are necessary, but they can be hard to make.
有时候，他说，这些编辑化的决定是必须的，但这也是很难去做出的。
During the restore operation, transaction logs are necessary to bring the database to a consistent state.
在执行恢复操作时，需要使用事务日志使数据库处于一致状态。
All of these steps are necessary to facilitate the smarter transformation of a supply chain.
要让供应链变得更加智能，所有这些步骤都是必要的。
Synchronization methods are necessary when the property of concurrency exists.
当存在并发特性时，必须使用同步方法。
But until this occurs, alternatives are necessary to side-step this problem.
但在这个版本出现之前，需要采用替代方法来回避这个问题。
Clearly, different practices are necessary when dealing with distributed teams that must collaborate effectively.
无疑，在处理必须有效协作的分布的团队的时候，不同的实践是有必要的。
The good news is, that no additional packages are necessary when using a current JDK.
好消息就是在使用当前的JDK时，不需要任何附加包。
Anti-virus programs are necessary but don’t always guard against intrusions.
反病毒程序是有必要用的但是仍不能够经常的阻止渗透。
These are necessary, though not sufficient, conditions for GM's survival.
但就通用汽车的生存而言，这些只是必要条件，而非充分条件。
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