咯 is a colloquial variant of the particle 了 (le), pronounced 'lo'. It often sounds lighter and more casual, suggesting something is obvious or settled. Common in southern dialects and informal speech.
mistakes
咯 can also be pronounced 'gē' meaning the sound of clucking (咯咯笑 = to giggle), or 'kǎ' in medical terms (咯血 = to cough up blood). As a particle it is always 'lo'.
