Cov tshuab nres tsheb 4 theem tau ua tiav kev teeb tsa thiab siv sijhawm ntev. Nws tau siv rau tsev kho mob. Muaj ntau tshaj 100 qhov chaw nres tsheb hauv Sri Lanka. Lub tshuab nres tsheb ntse no tso tawm qhov kev nyuaj siab rau cov neeg feem ntau. Lub tshuab nqa chaw nres tsheb khaws ntau lub tsheb hauv qhov chaw txwv.
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Lub sijhawm tshaj tawm: Lub Xya Hli-19-2023