“自行辩护”常见的英文表达是 “defend oneself” 或 “conduct one's own defense”。
“defend oneself”：是比较简洁、常用的表达，侧重于描述个人为自己进行辩护这一行为。例如：In court, he had to defend himself against the charges.（在法庭上，他不得不为自己进行辩护，以应对指控。）
“conduct one's own defense”：意思更为正式、完整，明确指出“进行自己的辩护”这一动作过程。例如：The suspect decided to conduct his own defense at the trial.（嫌疑人在审判时决定自行辩护 。）