This piece of code is vulnerable to XSS attacks because no check is made to validate the input.

这段代码很容易受xss攻击，因为没有进行任何的输入验证。

youdao

The second issue is data security because there is no check of roles or users to ensure proper access to the data.

第二个问题是数据安全性，没有任何角色或用户访问检查来确保适当的数据访问。

youdao

Similarly, it is not possible to tell if an address field is timely if there is no check against an address Modification Date field.

类似地，如果没有检查一个Address Modification Date字段，那么就不能说一个地址字段是否是及时的。

youdao

Now,airlines will have to check the no-fly list within two hours of being told of additions, instead of twenty-four hours.

VOA: special.2010.05.08

Let me just check that, yes, no, excuse me.

让我想想，哦，不好意思。

麻省理工公开课 - 固态化学导论课程节选

It says, well I'm going to print out first and last just so you can see it, and then I say, gee 2 if last minus first is less than 2, that is, if there's no more than two elements left in the list, then I can just check those two elements and return the answer.

然后它计算了尾点和开始点的差,如果小于2的话,也就是说数组中的元素小于等于，我对这两个元素进行比较,然后返回结果就可以了，否则的话，我们就去寻找中值点，注意它是怎么实现的,首先这个指向一个列表的开头。

麻省理工公开课 - 计算机科学及编程导论课程节选

Unseen here is how much harder the average American would work if it were apparent that there would be no check waiting once the ax falls.

FORBES: With Unemployment Benefits, It's the Invisible That Truly Matters

There are fewer security procedures and no check-in for trains.

BBC: Corporate rail travel on the rise

In addition, Monthly4G plans require no annual contract, no credit check and no deposit, offering great value and flexibility to customers.

ENGADGET: Samsung Galaxy S II for T-Mobile now available for $299 without contract from Walmart