វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
small
medium
large
Prelection
ENGLISH MEANING
noun
1.
A
lecture
or
discourse
read
in
public
or to a
select
company
.