This is because traversal operators always return lists, even if there is only one item, or none, in the result.
这是因为遍历操作符总返回列表，即使结果中只有一个或没有项时也是如此。
A FLWOR expression is much like a SELECT-FROM-WHERE expression in SQL: it is used to iterate through a list of items and to optionally return something that is computed from each item.
FLWOR表达式非常像SQL中的SELECT - FROM - WHERE表达式——它用于对由多项组成的一个列表进行迭代，并且可以选择返回通过在每一项上进行计算得到的值。
If we don't have exactly one item selected, we disable the action, adjust the tool tip to say why it is disabled, and return.
如果选中的不是恰好一项，则禁用该操作，调整工具提示以说明为什么禁用，然后返回。
Once you get the item from disk, you put it in the cache and then return it.
从磁盘中获取项之后，将其放入缓存然后返回。
Another reason that you aren't asked to confirm starting your car or buying groceries is that these operations are easy to undo. You just turn off the key or return the unwanted item.
我们不需要确认的另一个理由是开车和买东西都是可以恢复的操作：你可以将钥匙旋回来或者将不要的东西退回。
Many hotels say they respect guests' privacy and won't return an item unless the owner asks for it.
许多酒店称，他们尊重客人的隐私，只在失主的要求下归还。
After it has determined the item type, your connector will need to construct the item in the appropriate class and return it to the user.
在判断条目类型之后，连接器需要在适当的类中构造条目，并将它返回给用户。
Each function is called in turn with an Item from the array and should return the content with which to populate the corresponding cell.
按照顺序使用来自数组的Item逐个调用每个函数，并用返回的内容填充对应的单元格。
The return value of the function filetype( name )—either the constant FILE or the constant DIR—collates each item in the file system into its appropriate slot.
filetype(name )函数的返回值 —常量FILE或常量DIR — 将文件系统中的每一项整理到相应的slot 中。
This version of evaluate takes a context item, as is normal, but does not require a return type, and it seems to return a string.
这个版本的evaluate也需要上下文参数，但是不需要返回类型，它似乎返回一个字符串。
Evaluate (Object item) : STRING — shorthand for evaluate (item, XPathConstants.STRING); note that the return type is already known.
evaluate (Objectitem)：STRING是evaluate (item,XPathConstants . STRING)的缩写形式，注意返回类型是已知的。
When the content has been created in the repository, your connector will need to return a String item ID for the item.
在存储库中创建了内容之后，连接器需要返回条目的String 条目ID。
Another possibility is to return an error to the user (for example, if the user is trying to buy an item that's no longer available).
另一种可能性是向用户返回一个错误(例如，如果用户正在购买一个不再销售的商品)。
The goldsmith might also write notes promising so much gold and not promising the return of any particular item of gold.
这个金匠会写下票据，保证归还一定数量的金子，但是不保证归还某个特定的金器。
Take the name or ID of a bulk-production item as input and return its current manufacturing schedule.
将批量生产的产品的名称或ID作为输入，并返回其当前制造时间表。
Return the item price, name, meta data and stock information for each item to the user.
将每种产品的价格、名称、元数据和库存信息返回给用户。
Kostya no longer resisted this; he had learned that it was best simply to return the item-a blouse, a pair of earrings, a lipstick-as soon as possible.
克斯特亚对此已经不再抱怨，他知道最简单地就是把东西尽快送还给她——不是一件上衣，就是一对耳环，或者一只口红。
The process is not under full control of the enterprise, as it relies on the customer to collect the rented item and return it on time.
此流程并不由企业进行完全控制，因为它依赖于客户领取租借物品并按时返回。
Most commonly, the repository will have assigned an ID to the item and returned it to you on creation, and you will just return this ID to the user.
在常见情况下，在创建条目时存储库将给条目分配一个ID并返回它，您只需将这个ID返回给用户。
This will prevent you from making impulse purchase, and help you to avoid return trips to the store because you forgot an item.
这样可以防止你即兴购买，也可以帮你省下因为遗忘而忘返商店重新购买的路费。
Take a production item's name or identifier as input and return the type of the production item (that is, whether it is a large-variety item or a bulk-production item).
将一个生产产品的名称或标识符作为输入，并返回该生产产品的类型(即，它是多种生产的产品还是批量生产的产品)。
Not only does the store have an unlimited period for returns, but it will also provide you with a full refund if and when you do choose to return an item.
这家公司不仅无限期接受退货，并在你选择退货时提供全额退款。
Unless someone is totally unreasonable, and you have done everything in your power to accommodate their request, never deny people the ability to change their mind, return an item, or retract a bid!
除非有人是完全不合理的，你所做的一切权力容纳你请求从不否认人们能够回心转意，回到一个项目，或申办得紧！
If this condition is true (meaning I want this item in my list), I return a new list constructed by taking the current head and a filtered remainder of the list.
如果该条件为true(即我希望该项存在于列表中)，则将返回一个新列表，该列表由当前的头部项和列表中过滤后剩下的项组成。
Return an XML (XHTML) structure containing cost calculations for each item, along with the publishing information.
返回XML (XHTML)结构，包含每个货品的总价计算以及发布信息。
All requested item should be received bythe Outlet Manager. After check OSE condition and QTY the Outlet Manager and Stewardingshould be countersigned on the loan & return form.
所有申请物品应由使用部门经理接收，确认物品完好及数量正确后，使用部门经理及管事部在借出或归还记录表上签字。
I received my item today but it has some damages. Can I return the item for a refund?
我今天收到物品了，但是它有些受损。我可以物品退还并退钱吗？
You can end up paying as much to return an item as the purchase price of the item.
你可能最后花在上退货的费用与花在购买商品上的钱一样多。
You can end up paying as much to return an item as the purchase price of the item.
你可能最后花在上退货的费用与花在购买商品上的钱一样多。
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