If this condition is true, then the command in the element will be executed.
如果该条件为真，那么将执行元素中的命令。
A condition is applied using an if attribute on the element.
条件是使用元素中的if属性应用的。
This lens is in FAIR condition due to scratches on the rear element.
这支镜头的状态也就算过得去，因为后组件有划伤。
This lens is in FAIR condition due to scratches on the rear element.
这支镜头的状态也就算过得去，因为后组件有划伤。
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