The evolutionary track of abundance ratios of C/O, N/O, S/O, Si/O, C/Fe, N/Fe, O/Fe, and N/Si as predicted by our best models (M_inf = 10⁹ M_⊙) with a metal-enhanced wind (w_H,He = 0.3). The solid red, dash-dotted black, long-dashed magentaand short-dashed blue lines are the results for M9b1, M9b2, M9b3 and M9b4 in Table 3. The observational data are same as in Fig. 3, open cyan circles for BCDs and open green squares for DLAs.