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TOEFL IELTS BNC: 5989 COCA: 9571

ascertain

1 ENTRIES FOUND:
ascertain /ˌæsɚˈteɪn/ verb
ascertains; ascertained; ascertaining
ascertain
/ˌæsɚˈteɪn/
verb
ascertains; ascertained; ascertaining
Learner's definition of ASCERTAIN
[+ object] formal
: to learn or find out (something, such as information or the truth)查明;弄清

— ascertainable

/ˌæsɚˈteɪnəbəl/ adjective

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