The biscuits she baked turned out to be as hard as rock.

她烤的饼干结果像石头一样硬。

youdao

He redoubled his efforts and swam as hard as he could toward the white rock.

他用加倍出力用劲儿，拼命朝白色的礁石游去。

youdao

Engineerss had to dig and blast through 73 different kinds of rock, some as hard as granite and others as soft as sugar.

施工人员挖出并炸掉的岩石足有73种之多，有的岩石硬的花岗岩，有的岩石软的像糖果。

youdao

This cooling liquid formed a very hard rock known as granite.

VOA: special.2009.01.07

His coronary arteries were hard as a rock and filled with calcium.

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Still critics said the Canadian star, who turned 19 on Friday, risked alienating fans by behaving with the same disregard for timekeeping as more hard-edged rock stars.

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