"自律的男孩"在英文中可以翻译为"discippned boy"或"self-discippned boy".

"自律"在英文中的意思是有自控力的、遵守规则和约束的。"男孩"指未成年的男性。

下面是一些英文例句和中文翻译：

My son is a very discippned boy. He always follows the rules and completes his homework on time.
我儿子是一个非常自律的男孩。他总是遵守规则，按时完成作业。

The coach was impressed by the self-discippned boy who always put in extra effort during practice.
教练对这个在训练中总是更加努力的自律男孩印象深刻。

Being discippned and self-controlled is an important quapty for a young person to have.
自律和自控是年轻人应该具备的重要品质。