bahasa indonesia

Sementara means 'while' in the sense of 'someone does something,
while someone else does something else' or 'something happens while
something else also happens'.
Kakak perempuan saya memasak sementara ibu pergi berbelanja.
My older sister cooked while my mother went shopping,
Pada bulan Desember di Eropa turun salju, sementat-a di Australia
cuaca panas.
In December, in Europe it snows, while in Australia it is hot.
Tuti tertawa sernentara ketiga temannya rnenangis.
In contrast to sementara, which is used either for different people doing
different things at the same time or for different things happening at the
same time, sambil is used to refer to the same person(s) or animal(s)
doing two things at the same time. It can be placed either at the
beginning or in the middle of a sentence.
Ria makan sambil menonton televisi.
Rio is eating while watching television.
Sambil meringkik kuda itu berlari.
While neighing the horse ran.
I52 A Student's Guide to Indonesian Grammar