لُغَتُكَ العَرَبِيَةُ سَلِيمَةٌ لغة = Language لغتك = your language عربية = Arabic سليمة = fit / good so it means ... Your Arabic Language is fit , is okay ...

A little addition to what GTO posted: لغتك = لغة + ك ك = your سليمة = correct