rock-solid (also rock solid)

• 1. 

  ADJ Something that is rock-solid is extremely hard. 十分坚硬的

  例：

  Freeze it only until firm but not rock solid.

  把它冻硬，但是不要像石头一样硬。

• 2. 

  ADJ If you describe someone or something as rock-solid, you approve of them because they are extremely reliable or unlikely to change. 十分可靠的 ; 不易改变的 [表赞许]

  例：

  Mayhew is a man of rock-solid integrity.

  梅休是一个正直可靠的男人。