When used properly, worry is an incredible device.
如果运用得当，忧虑也是一种不可思议的工具。
Drugs are only approved after tests have demonstrated that they are relatively safe when used as directed and when their benefits outweigh their risks.
药物只有在试验证明它们是相对安全的情况，且其益处大于风险时，才会被批准使用。
The casino issued to him, as a good customer, a "Fun Card," which when used in the casino earns points for meals and drinks, and enables the casino to track the user's gambling activities.
由于他是一个好顾客，赌场给他发了一张“乐趣卡”，可用以在赌场获得餐饮积分，并使赌场能够跟踪用户的赌博活动。
The Royal Society of Public Health discovered that music and art, when used in hospitals, help to improve the conditions of patients by reducing stress, anxiety and blood pressure.
英国皇家公共卫生学会发现，在医院使用音乐和艺术，可以通过减轻压力、缓解焦虑和降低血压来帮助改善病人状况。
It can also be exploitative, especially when used with vulnerable populations.
它也可以是剥削性的，特别是用于弱势群体的时候。
It is efficient when used properly.
正确使用时，它才有效。
Make life easier when used correctly.
在正确使用时使工作更容易。
Each of these offers something when used properly.
当适当地使用时，上面每种都会提供一些东西。
Specifications for messaging for XML when used with SQL.
结合使用SQL时，XML消息传递规范。
Shadows can really add visual depth and texture when used the right way.
当正确使用时，投影的确能为设计增加视觉深度和质感。
When used by itself, it doesn't much hinder the readability of the code.
单独使用时，并不妨碍代码的可读性。
When used with multiple threads, you must use some type of synchronization.
和多线程一起使用时，必需使用某种类型的同步。
For wires, when used in CAI, the owner of the wire is the perspective ID.
对于连接，用于CAI时连接的所有者是透视图id。
When used correctly, the facility simplifies the creation of software systems.
如果使用得当，这个功能可简化软件系统的创建。
These two principles, especially when used together, can be powerful motivators.
这两个原则，特别是当用在一起的时候会成为十分有力的激励因素。
When used as the type for a table, the table is known as a typed table (Listing 3).
当用作表的类型时，该表就被认为是一个类型化表(清单3)。
Reflection is much slower than direct code when used for field and method access.
当用于字段和方法接入时反射要远慢于直接代码。
When used, both the IDE and compiler will check for conflicts and flag them as errors.
当它被运用的时候，IDE和编译器都会检查其中的冲突，并把它们标记为错误。
Textual substitution can get very messy when used in combination with other expressions.
文本替换在与其他表达式一起使用时，可能会变得非常混乱。
LED's require resistors to control current when used with batteries rated at over 2 volts.
当使用2伏以上的电池时，需要使用额外的电阻来帮助控制电流。
When used in the home decor white gives a clean, fresh look and really opens up a room.
当在家里装饰白色，会给人一种洁白，新鲜的感觉，能真正的释放出空间。
Tobacco is the only consumer product which kills when used as intended by its manufacturers.
烟草是当按照生产商意图使用时唯一会造成死亡的消费产品。
When used appropriately, these medications can be very helpful and have few side effects.
使用得当的话，这些药会很有效且几乎无副作用。
When used for a scoped resource, the same name can be re-used in multiple virtual portals.
当用作限定作用域资源时，相同的名称可以在多重虚拟门户中重用。
When used with lights and creativity, they can give an amusing and playful effect to the image.
当与光照和创意结合使用时，它能给图像带来轻松有趣的效果。
It's simple — which also makes it fast — yet it is very powerful when used in the right context.
它很简单——同样提供了速度——但是它也非常强大，如果在正确的上下文中使用的话。
Such an approach worked well when used by the Pentagon to decide which military bases to shut down.
五角大楼曾经用类似的方法决定关闭哪些军事基地，结果颇有成效。
Prescription drugs are safe when used judiciously, and better than the consequences of not sleeping.
处方药使用得当还是安全的，这总比失眠药好。
Prescription drugs are safe when used judiciously, and better than the consequences of not sleeping.
处方药使用得当还是安全的，这总比失眠药好。
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