这种性能数据收集方法可以一箭双标。
This type of performance data collection kills two birds with one stone.
不过，数据收集方法的改变却未见报导。
What wasn't reported, though, was a change in collection methods.
我们通过各种不同的数据收集方法，例如实验，观察或收集数据等。
We do that by various data-gathering methods, such as experiments, observation, or collecting data.
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