In everyday life this perceptual bias is useful; it is what normally allows you to understand how distant objects occupy space.
在日常生活中知觉偏差是很有用处的，这能让你判断出一个物体的长度，宽度和高度。
This line is useful because it tells us how much of the heap is free and that there are objects being cleaned up and not pinned to the heap.
这一行非常有用，因为它告诉我们这个heap有多少是空闲的，而且有一些对象正在被清理且不会占用这个heap。
This internal part of message Broker product is not exposed to developers, but it is useful to see how it works so that you can understand the architectural scalability of message flows.
MessageBroker产品的这个内部组件不会公开给开发人员，但是了解它的工作方式将非常有用，您可以通过它了解消息流的架构可扩展性。
I don't think it is necessary for me to explain how useful something like this is; the 600 million plus members does that well enough.
在我看来，没必要解释这东西有多么实用；6亿多用户已经足够说明一切了。
Determine what information is vital, what method is best to obtain this information, and how much detail is necessary for the information to be useful.
确定什么信息至关重要，什么方法是取得这种信息的最佳途径，及有多少细节对于信息是必需的。
This is useful for examining how you spend your time and where. It is most useful for considering your work.
这个训练对检讨你如何以及在哪里破费你的时间很有用，对你的工作尤其有辅助。
It is one of the ways of posing the problem of transference which it would be quite useful to pose from this Angle, because it is the only way of knowing how to deal with acting-out.
这就是移情提出的难题的方式之一。从这个角度提出这个难题，用途很大，因为这是唯一的方法，知道如何来处理激情的演出。
Planetary gearbox is very useful but how to design its optimum scheme is quite difficult. In this paper, at first, a new method is presented and concisely narrated.
多档行星变速箱是十分有用的，但其最佳方案的设计是一件十分困难的工作。
This is useful for displaying a great deal of information, for example how to register the product, that is not suitable for display on the receipt.
如果您需要向客户提供大量但不宜出现在收据上的信息，例如如何注册产品时，这是十分有用的。
This is useful for displaying a great deal of information, for example how to register the product, that is not suitable for display on the receipt.
如果您需要向客户提供大量但不宜出现在收据上的信息，例如如何注册产品时，这是十分有用的。
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