一燧石铺成的窄道在这短斜坡上蜿蜒上升。
他击中你燧石般的脸，点着了它。
这个国家这一区的房子是用燧石建造的。
这堵墙是用燧石建成的。
剥落的燧石刀片只一方。
燧石受到的敲打越厉害，发出的光就越灿烂。
Flint the more powerful by knocking, the light is more bright.
然而，幸亏古代人制造了石头工具，尤其是燧石。
Fortunately, however, ancient men made tools of stone, especially flint.
这样我们就能更好地理解燧石在高度流体状态时的变形情况。
Thus we can better understand the deformation of chert in a highly fluid form.
然而，幸运的是，远古人用石头制作了工具，特别是用燧石。
Fortunately, however, ancient men made tools of stone, especially flint.
然而，幸运的是，远古人用石头制作了工具，特别是用燧石。
Fortunately, however, ancient men made tools of stone, especially flint.
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