1.He’s been willful and headstrong from a baby.

1.他从小就固执。

2.The trouble with her is that she is too headstrong.

2.毛病是太固执。

3.The headstrong young couple entered into a marriage doomed to failure.

3.这对固执轻人，结成了一桩注定要失败。

4.She’s hopelessly headstrong; she always gets up against people around her.

4.得无要救药，老是同周围人闹别扭。