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1.The scientist observed the animal's behavior during the excitation stage.
科学家在动物的兴奋阶段观察了其行为。
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2. During this phase, the team worked tirelessly to achieve their goals.
在这一阶段，团队努力不懈地实现他们的目标。
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3. The researcher found that the animal's behavior changed significantly during the excitation stage.
研究者发现，动物在兴奋阶段的行为发生了显著变化。