1. Well, we can start a fire, Matt said. But there one problem. We need a piece of flint. �����Ļ������ǿ���ȼ��һ�ѻ�����˵������һ�����⣬������Ҫһ����ʯ��
2. The finest vineyards are found on well-draining gravel, where quartz and flint pebbles lie over a subsoil of marl. ��õ�����������ˮ���õ���ʯ����������ʯӢ����ʯƽ������ҵ��²���֮�ϡ�
3. Fortunately, however, ancient men made tools of stone, especially flint, because this is easier to shape than other kinds. Ȼ�������˵��ǣ�Զ����������ʯ�����Ƿ�����ʯ������Ϊ��ʯ������ʯͷ���׳��Ρ�
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n.
1. a hard kind of stone; a form of silica more opaque than chalcedony
2. a river in western Georgia that flows generally south to join the Chattahoochee River at the Florida
3. a city in southeast central Michigan near Detroit; automobile manufacturing