名词
中文翻译：自我训练
同义词：
['self-improvement', 'self-education']
例句：
-
1. She decided to self-train for a marathon.
她决定为马拉松进行自我训练。
-
2. Self-training is an effective way to improve one's physical fitness.
自我训练是提高身体素质的有效方法。
-
3. He spent hours self-training every day to prepare for the competition.
他每天花几个小时进行自我训练，为比赛做准备。