Definition of implicit
Definition 1 and 2 seem to be contradictory. How can I know which meaning it is in a sentence?

Definition of implicit

1 a :capable of being understood from something else though unexpressed :implied ·an implicit assumption

b :involved in the nature or essence of something though not revealed, expressed, or developed :potential ·a sculptor may see different figures implicit in a block of stone
—John Dewey

c of a mathematical function :defined by an expression in which the dependent variable and the one or more independent variables are not separated on opposite sides of an equation — compare explicit 4

2 :being without doubt or reserve :unquestioning ·an implicit trust

Question

Definition of implicit
Definition 1 and 2 seem to be contradictory. How can I know which meaning it is in a sentence?
    
 Definition of implicit

1 a :capable of being understood from something else though unexpressed :implied ·an implicit assumption

b :involved in the nature or essence of something though not revealed, expressed, or developed :potential ·a sculptor may see different figures implicit in a block of stone
 —John Dewey 
 
c of a mathematical function :defined by an expression in which the dependent variable and the one or more independent variables are not separated on opposite sides of an equation — compare explicit 4

2 :being without doubt or reserve :unquestioning ·an implicit trust

Answer

Think of it as something being so absolute that there is no need to say it expressly.

I think your confusion may stem from the Chinese translation "含蓄的."  I think "implicit" and "含蓄的" are different concepts.  To me, 含蓄 is used more to talk about a person's attitude, like when you want to scold someone but don't want to be too harsh.  Similar to 委婉.  There may be limited cases when implicit can be used this way, but I think it's usually not.  I think if you look at a lot of example sentences you'll get a better idea of the concept.

Answer

Hello Gary. You know Chinese right? implicit一个意思是“含蓄的”，另一个意思是“无疑问的”。比如我说含蓄的说某事，是不是会有一点不确定，才含蓄的说？那就跟第二个意思相反咯？还是文化上有差异？西方人含蓄，但是也可以是很确定的？

Answer

I don't see how it is contradictory. They are both variations of the same idea. Can you explain in what way you think they are contradictory, and/or give an example where they are different?