求翻译：Sometimes you want to capture the subtle tones of a sunset. Other times you want to freeze the action. The D7000 delivers both, thanks to the newest generation of image processing engine, EXPEED 2, which performs multiple tasks with more speed and power. Expect smoother tonal gradations, even in difficult shadows and highlights, for a greater sense of depth in your images. Shoot continuously at 6 frames per second so you can capture the action you’ve been missing. Focusing performance such as face recognition in Live View mode is also further improved, letting you concentrate on your composition.是什么意思？

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