They saw a footmark in the sand.
他们发现沙地上有脚印。
I haven't find my father's footmark even now.
即使到了今天，我还没找到爸爸当年的足迹。
I like we're saunter and leave a footmark in the beach.
喜欢我俩一起漫步并留下足迹。
He studies footmark for a whole life, it is our country's famous footmark expert.
他毕生研究足迹，是我国闻名的足迹专家。
He studies footmark for a whole life, it is our country's famous footmark expert.
他毕生研究足迹，是我国闻名的足迹专家。
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