64 - ascertain, certain etc.

64.1   ascertain   ( v. )  攪清楚

 

64.2   certainty   ( n. )  確定性, 確定的事

 

64.3   certain   ( adj. )  確定, 肯定

Are you absolutely certain that you gave them the right number?

 

64.4   certainly   ( adv. )  確定, 肯定,  (回答)當然可以

Customer : Can I have a bottle of water ?

Waiter : Certainly.

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