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Throughout the testing stage, communication is important.
在整个测试阶段中，交流非常重要。
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The first stage: to make the testing tool.
第一阶段：编制测试工具。
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The third stage is the formal testing.
第三个阶段是形成正式问卷后施测。
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The third stage is the formal testing.
第三个阶段是形成正式问卷后施测。
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