He retreated out of arm's length, and picked up a large flint.

他向后退，使我没法碰到他，而且拣起一块大硬石头。

Finally, we strike the flint while turning up the gas of the Bunsen burner.

最后，打着火，同时打开煤气喷灯的阀门。

After his friends all went back, he hit the flint twice.

等所有的朋友走了之后，他打了两次火石。

He tried to make sparks with the flint.

他试图用火石擦出火花。

It is the flint from my grandmother, so I want to get it.

这是我祖母留下来的，所以我想拿到它。

The area was rich in flint for making weapons and in animals to hunt.

这片区域有着足够多的锋利岩石来制造武器，也有着足够多的猎物。

They were master of flintknappers meticulously chipping and sharpening pieces of flint to make spears and cutting tools.

他们擅长用打火石精细雕刻，用尖利的碎石片制作长矛以及削制工具。

Rub a steel file with a flint in a dark room, and notice what pretty sparks you get.

在黑暗的房间中用钢锉在燧石上摩擦, 就能够看到漂亮的火花。

Suddenly, the flint came up in his mind.

突然，他想起了那块火石。

Fortunately, however, ancient men made tools of stone, especially flint, because this is easier to shape than other kinds.

然而，幸运的是，远古人用石头制作了工具，特别是用燧石，因为燧石较之其他石头更容易成形。