如果立方体有一个半掩的盖子，您同时可看到其正面和背面，此时同时渲染两面的操作非常有用。
The latter is useful if the cube has a half-open lid and you can see both inside and outside at the same time.
这些只是在过去的3-4天里，增加到我们目录中有用网站及程序的一半而已。
These are just half of the applications that were added to our directory in the last 3-4 days.
虽然如此，也只能比对从案发现场带回来的大约一半的有用组织样品。
Even so, a match can be found for only around half the usable tissue samples taken from crime scenes.
网络容量：当然，延迟合理也仅是需要考虑的问题的一半，另外还需要有用足够的容量。
Network capacity: of course, sufficient latency is only half of what needs to be considered; adequate capacity is also required.
有人认为售出的唱片中有一半并没有用来播放音乐。
Some think that half the records sold are not actually played.
我没有用手控制，都是十二个半英尺高的震动空气柱，自然产生的音符。
Now I didn't use — no hands — that was just the notes that are naturally on the twelve and a half-foot length of vibrating air.
使用XML从半结构化数据集中抽取有用信息。
Using XML to extract useful information from semi-structured data sets.
熊猫却在相反方向在犯错，几乎没阻挡有用的邮件，但却让超出一半的明显的垃圾邮件进入收件箱。
Panda erred in the opposite direction, blocking hardly any valid mail but letting more than half the undeniable spam into the Inbox.
黑的铁氧化物(磁铁矿)：黑的铁氧化物发现有用的，特别在半金属的配方作为提高冷的摩擦力。在半金属的配方的通用的成分。
Black Iron Oxide (Magnetite) Black Iron Oxide is found useful, especially in semi-metallic formulas as an agent for elevating cold friction.
虽然有些部分已完全竣工，既有用又美观，但其他部分还仅仅建成一半。
Though some parts are pretty well complete, and both useful and beautiful, others are half done.
特别是当你的另一半怀疑他自己，需要从你那获得一些精神支柱时，它会特别有用。
This phrase is especially helpful when your partner doubts himself and needs some psychological support from you.
SPECT肺灌注显像是定性、半定量分析肺血流的简单、方便、有用的方法。
SPECT lung perfusion scanning is a simple, convenient and useful method for assessing pulmonary flow qualitatively and semi-quantitatively.
诚然，对于专业和半专业的摄影师来说，拥有变焦镜头的大相机总是有用的。 而且，在诸如运动会等场合，如果你距离拍摄对象很远，这些相机也是很有帮助的。
Sure, big cameras with zoom lenses will always be useful for professional or semipro photographers, or for times (like at sporting events) when you are far from the action.
“太糟了，”学者说，“你浪费了你一半的生命。懂那些规则是很有用处的。”
"Too bad," said the scholar, "you've wasted half your life. It's useful to know the rules."
“太糟了，”学者说，“你浪费了你一半的生命。懂那些规则是很有用处的。”
"Too bad," said the scholar, "you've wasted half your life. It's useful to know the rules."
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