launch into
US /lɔːntʃ ˈɪntuː/
UK /lɔːntʃ ˈɪntuː/

1.
انطلق في, بدأ بقوة
to start doing or saying something with great energy or enthusiasm
:
•
He suddenly launched into a long explanation of his theories.
فجأة انطلق في شرح طويل لنظرياته.
•
The choir launched into a powerful rendition of the anthem.
انطلقت الجوقة في أداء قوي للنشيد.