Indeed, it may be for any of the factors, physical as well as biotic, that are essential for organisms.
事实上，竞争对象可能是生命体所必须的任何生物或非生物因素。
As a rule, it is essential that the poor's productive capabilities be mobilized and the conditions for developing these human resources be improved.
通常，必须调动穷人的生产能力，改善开发这些人力资源的条件。
It is, therefore, essential that a banksman be appointed to warn the operator of hazards that cannot be seen from the operator's position.
重型运土设备使用时，操作人员只能看到有限的区域，因此，必须指派矿口监工随时警告操作人员在操作位置上无法发现的危险。
If the input will later be used as parameters to operating system commands, scripts, and database queries, then it is essential that you do so.
如果输入以后会被用作操作系统命令、脚本和数据库查询的参数，那么对输入进行清理是非常重要的。
But although it's often seen as a dreadful task, it can be an essential job that an administrator must perform to keep systems in sync within the environment.
尽管这通常是让人望而生畏的任务，但这是管理员为保持环境中系统同步所必须执行的一项基本工作。
The essential aim of any spiritual practice—be it meditation, prayer, yoga, tai chi, etc.—is to help you remove the blocks to the awareness of the happiness that already exists in the center of you.
任何灵性练习——可以是冥想、祈祷、瑜伽、太极等等——的基本目标是帮助你扫除通向幸福意识的障碍。 这种意识早已存在于你自身深处。
In planning for a release, it may be wise to decide upfront that particular requirements will certainly be addressed in the upcoming release (essential themes).
在发布的规划中，事先确定特定的需求将会在即将到来的发布(重要主题)中处理是非常明智的做法。
It is essential that you ensure your logical logs will be backed up regularly if you plan to do parallel backups or want be able to perform point-in-time restores.
如果计划执行并行备份或者希望能够执行指定到某一时间点的还原，则确保定期备份逻辑日志就非常重要。
Describing such a process in detail is beyond the scope of this article, but it will be helpful to look at a sample list of essential considerations that are most often overlooked.
详细介绍这样一个流程超出了本文的范围，但检查下面这个经常被忽略的关键注意事项的样例列表将会有所帮助。
Networking is essential, especially when you are just getting started. The 30 minutes that you will dedicate to it every day could be split among.
网络社交活动是相当重要的，尤其是你刚刚起步的时候。
In the fullest sense of the word, it can be said that everything in that work is essential.
就其完全的字面意义而言，我们可以说，他作品的一切都是至关重要的。
If LDAP is to be used in the production environment, it is essential that it be included in the migration test environment.
如果产品环境中使用的是LDAP的话，那么将其包含到迁移测试环境的话，就非常重要。
If it were essential on the stage to love as people really love, to employ that irreplaceable voice of the heart, to look as people contemplate in life, our speech would be in code.
如果舞台上必须要有现实中的爱情、要运用心灵的不可替代之声、或看似如同生活中的人们一样沉思，那么我们的语言就是这口令。
The UK premier admits that this "will not always be a comfortable discussion but it is in my view an essential one".
这位英国首相承认，这“不会总是一个舒服的讨论，但在我看来是十分必要的。”
Governance is so essential that it must be built into the SOA planning and deployment from day one.
治理非常重要，因此必须在一开始就将其纳入到soa计划和部署中。
It seems that this is a non-essential project and maybe should not be included at all.
在我看来这并不是一个重要的项目，压根就不应该包含进来。
Both men said that it was essential to busy themselves with a daily schedule, no matter how mundane each task might be.
这两人都表示，有必要给自己制定一个时间表，让自己每天都有事可做，哪怕是很小的任务都可以。
Phosphorus is one of six chemical elements that have long been thought to be essential for all Life As We Know It.
磷长久以来一直被认为是我们所知道的生命体必需的六种化学元素之一。
We believe that it is essential for engineers to be exposed to the information directly and make their own judgments.
我们坚信，开发人员能够直接了解到新闻信息并对其做出相应的个人判断是至关紧要的。
In the case of donated goods, therefore, it is essential that the cost of transport, and associated logistics (warehousing, distribution etc.), be covered, if they are to accept the goods.
因此，捐赠物品的时候，如果要他们接受该物品，承担全部的运输成本及相关物流(仓储，配送等)费用是必要的。
Therefore, when you define the scope, it is essential to recognize that the delivered data warehouse will likely be somewhat broader than indicated by the initial requirements.
因此，在定义范围时，重要的是明白所交付的数据仓库很可能将比初始需求指定的宽广一些。
The essential point is that once a build is proven to be good it needs to swiftly move into production so that the staff can focus on the next set of features.
一旦一个某件版本证明没有问题，就需要快速移动到生产环境，这样团队就可以聚焦于下一系列要开发的功能。
It was essential that the new process be iterative, architecture-centric, and requirements-driven, features that existing systems were short on.
重要的是新的过程具有迭代的、以构架为中心的，以及需求驱动的特征，而这些特性是已有系统所不具备的。
I predict that it will be as essential to the present generation as the SEI and its Capability Maturity Model were to the last.
预计它对于目前一代的重要性就象SEI及其能力成熟度模型对上一代的重要性一样。
If FOAF is to support an online community, it is essential that the provenance of every piece of information be traceable.
如果FOAF要支持在线社区，那么每一段信息的起源必需是可跟踪的。
America has let it be known that, despite Mr Karzai's proven deftness in shirking tasks his foreign paymasters regard as essential, it is now prepared to get tough.
美国已经让世人知道，虽然卡尔扎伊先生已然证明了他逃避责任的娴熟——这点已被他的外国后台老板视为他的本质，但美国准备更加强硬。
America has let it be known that, despite Mr Karzai's proven deftness in shirking tasks his foreign paymasters regard as essential, it is now prepared to get tough.
美国已经让世人知道，虽然卡尔扎伊先生已然证明了他逃避责任的娴熟——这点已被他的外国后台老板视为他的本质，但美国准备更加强硬。
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