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。

youdao

Fortunately, however, ancient men made tools of stone, especially flint.

然而，幸亏古代人制造了石头工具，尤其是燧石。

youdao

Fortunately, however, ancient men made tools of stone, especially flint.

然而，幸亏古代人制造了石头工具，尤其是燧石。

youdao