In XML parsers, validation is usually turned off by default because many XML authors are not writing constraints; leaving it off helps to avoid lengthy processing in production environments.
在xml语法分析器中，验证在缺省情况下通常关闭，这是因为很多xml作者都不编写约束；将其关闭可帮助避免产品环境中的冗长处理。
It helps that there are lots of almost empty container ships sailing back to Asia after unloading consumer goods in Europe and America: they will usually carry secondhand paper and plastic for a song.
在货轮把大量的消费品卸在了欧洲和美国的港口上以后，便正好有了大量将被运回亚洲的空置集装箱：他们通常会把二手的纸张运回去，且收费非常低廉。
It helps, travelers report. Employers don't appreciate the extra night's hotel bill, but since you're giving up your weekend, they usually fall in line.
来自旅客们的报告对我们很帮助：老板通常不愿意为你额外的夜间住宿支付费用，但由于你将要放弃整个周末，他们通常会改变做法。
If it helps (and it usually does), draw pictures to help demonstrate answers to these questions.
如果有帮助的话(并且它通常都会)，可以画图来形象地展示上述问题的答案。
This helps navigation in two wyas: generally, sites have fewer pages and sections; and the design of the site is usually less cluttered, making it easier to find navigation elements.
这在两个方面有助于导航：通常，网站拥有更少的页面和栏目；或者网站的设计通常是干净整洁的，更容易找到导航元素。网站的简洁设计是一个很好的解决导航可用性问题的方案。
Some contact with even the most awful, addicted or inadequate parent is usually better than none at all: it helps the children make sense of what has happened.
与即使是最糟糕的、上瘾的或不合格的父母保持某些联系通常要比完全没有的好：这有助于孩子理解发生的事情的意义。
Understanding how software actually works always helps someone to use it, but this understanding usually comes at a significant cost.
对于软件实际上是如何运转的了解，会有助于人们使用软件，但这种理解通常代价很大。
Usually Jack's father helps him with his homework, but this time he didn't, because he was not at home. Jack answered, "No. sir, He was busy last night. So I had to do it all by myself."
杰克的父亲通常都帮助他做作业但是这次没有，因为他不在家。捷克回答说“不，先生。他昨晚很忙，所以我不得不全都自己做了。
His turnaround jumper was unstoppable. His post-passes were usually on the money. It helps when you can see over everyone.
他的转身跳投无法阻挡，他的高位传球总是非常及时到位(你会发现它能够越过任何人)。
His turnaround jumper was unstoppable. His post-passes were usually on the money. It helps when you can see over everyone.
他的转身跳投无法阻挡，他的高位传球总是非常及时到位(你会发现它能够越过任何人)。
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