Just a side note, there is also a bitwise operator you can use if you want to trace everything except a certain component.

另外提醒一点，如果想跟踪除了某个组件之外的所有组件，还可以使用另一个位操作符。

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If you want to trace more than one specific traceLevel property, then you can use bitwise operator (|) to separate the different properties.

如果想跟踪不止一个特定的tracelevel属性，那么可以使用位操作符(|)来分隔不同的属性。

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It can analyze trace particle or vapor samples, so the operator can decide which collection method to use.

它还能分析追踪颗粒或气体样品，因而操作员可以决定使用哪种收集方法。

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