How to type multiple languages in android at once?

How to type multiple languages in android at once?https://lm.facebook.com/l.php?u=http%3A%2F%2Fow.ly%2FdR7B30a79rc&h=ATNzeHk2AubnPILwYC0c_DFuc4FP01Wyg0CdgD88KbJXjo-i45XRfSX7C6V31StgoEwCdfWMac-4WqHvEm3MPVATEtPuCnADF-rFcdHkOqHv_7iLxFZbX9rgRV7a0f6sXeEdwA&enc=AZNpY4owNKZPGcFwhl5u7p6ZGbKhj1SsRqeEI_WtW_DgZFkPPouZGVukWschjJzC1NFTxFwcS_L2-ixRPEFeFZMk-fNu2p3vm1QLxTUiue1u3YQqoiugo0AhMoI5Z8v5Q2_iUjoe-JC67klh_StxHjDiTasttgxTFlOYc9PWskzR90Q1ryLTUS-ZB26gixrVrhXcMbBP93LFmHPw5142oU193j1JtddOsLit5QpVGTqMY5_HOGyL3SVFANF_Orn-wgnRRmA5WzaC1wTmgketljY78aiSHi4MPqMBIfZU1KdC7GZy16sv1mZgremaXqcHr24&s=1