He told his son that one feels pain only when the fruits of labor are wasted.
他告诉儿子，只有当劳动的果实被浪费时，才会感到痛苦。
Other species take into account the changing conditions of light by performing their visual displays only when the light is favorable.
其他物种只在光线适宜时才会展示它们的视觉形象，以此来考虑光的变化情况。
In general, your attitudes will be internally consistent only when the behavior is easy, and when those around you hold similar beliefs.
一般来说，只有当行为简单而且周围的人和你有相似的信念时，你的态度才会表现得与内在一致。
It is only when the faculty of smell is impaired for some reason that we begin to realise the essential role the sense of smell plays in our sense of well-being.
"只有当嗅觉能力因为某种原因受到损害时，我们才开始明白嗅觉对健康的重要作用。
Such events occur only when the external conditions are favourable.
此类事件只有当外界条件有利时才会发生。
It was only when the hull was hanging freely from the lifting frame, clear of the seabed and the suction effect of the surrounding mud, that the salvage operation progressed to the second stage.
只有当船体从升降架上自由悬挂，脱离海床和周围泥浆的吸力作用时，打捞工作才进入第二阶段。
This caching happens only when the default Context is used.
只有使用默认上下文时才会进行高速缓存。
He gets close to wildlife at times, but only when the animals come to him.
他有时候和野生动物有近距离的接触，但也只是那些动物主动靠近他。
The menu markup is generated only when the C2A source menu icon is clicked.
只当点击c2a源菜单图标时，才会生成菜单标记。
Again, they were able to keep to a straight path only when the sun was visible.
再一次，他们只能在有太阳的时候才能保持直线。
Some properties fire only when the value changes, others when the input changes.
有些属性在值改变时触发，有些属性在输入改变时触发。
It is only when the browser loads the HTML document that the CSS is put to use.
仅当浏览器装入HTML文档时，才会使用CSS。
The XML is loaded, parsed, and transformed only when the cache is loaded or refreshed.
只有当缓存加载或刷新时，XML才被加载、解析、转换。
This variable is set to true only when the application context is going to be destroyed.
此变量仅在应用程序上下文要销毁时才会设置为true。
It's only when the kernel development needs to happen that there's much challenge to it...
只有在需要进行内核开发时，才会遇到一些挑战。
You can also provide a simple refresh link that triggers the Ajax call only when the user wants it.
还可以提供一个简单的刷新链接，只有在用户需要时才触发ajax调用。
With this new Ajax method, the HTML for the second TAB is created only when the user requests it.
使用这种新的Ajax方法，只有当用户请求第二个选项卡时才会为其创建HTML。
The abstract data buffer allocates the memory blocks when and only when the actual data becomes available.
抽象数据缓冲区仅在实际数据变得可用时才分配内存。
They rarely go bust because they have no overheads, and stop only when the owners are too old to carry on.
零售商们很少会破产，因为他们没有管理费用，只有当业主年纪太大、难以为继之时他们才会终止生意。
Resources following the network: line are not cached and can be accessed only when the network is available.
一行后面的资源不缓存，且仅在联网时可访问。
The location component is configured such that it generates an event only when the automobile enters a work zone.
位置组件被配置为仅当汽车进入某个工作区时生成事件。
The CachedScript class (see Listing 8) takes a script file and recompiles it only when the source code is modified.
CachedScript类(参见清单8)接受一个脚本文件并只有当源代码有修改时才会进行重编译。
Lesson 1. Develop transformations only when the semantic connections between the model elements are well understood.
经验1.仅在充分理解了模型单元之间的语义连接后才进行转换的开发。
All of the documentation and specifications insist that it's only when the ready state is 4 that data is safe to use.
所有的文档和规范都强调，只有在就绪状态为4时数据才可以安全使用。
Barring unforeseen errors, you should expect lxc-wait to return only when the container has entered the given state.
如果没有遇到意外错误，您应该期望只有当容器进入给定的状态时lxc - wait才返回。
When users interact with Web applications, typically their data is saved only when the form is submitted to the server.
当用户与Web应用程序进行交互时，通常只有当表单提交给服务器时，用户的数据才会被保存。
When users interact with Web applications, typically their data is saved only when the form is submitted to the server.
当用户与Web应用程序进行交互时，通常只有当表单提交给服务器时，用户的数据才会被保存。
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