 Our  numerical results show that first-order term typically exhibits rather poor performance and that the second-order term significantly improves the approximation's accuracy.
<fluency>  Our  numerical results show that first-order term typically exhibits rather poor performance and that the second-order term significantly improves the approximation's accuracy.
 Our numerical results show that first-order term typically exhibits rather poor performance and that the second-order term significantly improves the approximation's accuracy.