中英释义：
重点词汇
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视线
line of sight; sight; sightline; visual line; view; line of vision; eyeline
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距离
distance; range; interval; gap; span; remove; mileage; be apart from; be away from; away
视线
line of sight; sight; sightline; visual line; view; line of vision; eyeline
距离
distance; range; interval; gap; span; remove; mileage; be apart from; be away from; away