0 real but not immediately obvious -- 暗含的；深層的；潛在的
And what might be the underlying significance of these supposedly random acts? 這些看似偶然的行爲，其暗含的意義可能是甚麽呢？
1 used to describe something on which something else is based -- 以…為基礎的
The price of the investment fell below the value of the underlying assets. 這一投資專案的價格已經跌至低於標的資產價值。
2 positioned under the surface of something -- 位於…的表面之下的
On the surface it's a very funny novel but it does have a more serious underlying theme.
The underlying message of the film is that love transcends everything else.
We need to tackle the underlying causes of poverty and suffering.
It is important to look at all the underlying causes of the conflict.
