短语
中文翻译：像燧石一样坚硬
同义词：
['hard as nails', 'assolid as a rock']
例句：
-
1. The old house is as hard asa flint to move.
这所老房子搬起来就像燧石一样硬。
-
2.He was so determined that he would notgive up until he had succeeded.
他非常坚定，直到成功之前都不会放弃。
-
3. Thetask seemed impossible, but she persevered and finally achieved it.
这个任务看起来不可能完成，但她坚持不懈，最终成功了。