非机译
We shouldn't use our eyes for much a long time.
It is better to keep our eyes for about a foot from the book when we are reading.
We cannot read in a dark place or under a strong sunshine.
相信我
非机译
We shouldn't use our eyes for much a long time.
It is better to keep our eyes for about a foot from the book when we are reading.
We cannot read in a dark place or under a strong sunshine.
相信我
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