当我们从事近聚焦任务时，我们的眼睛确实工作得很辛苦，因为肌肉必须适应镜头来聚焦。
When we're engaged in near-focus tasks our eyes are actually working really hard, because the muscles have to accommodate the lens to focus that close.
当我们从事近聚焦任务时，我们的眼睛确实工作得很辛苦，因为肌肉必须适应镜头来聚焦。
When we're engaged in near-focus tasks our eyes are actually working really hard, because the muscles have to accommodate the lens to focus that close.
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