And then you'll find that your level of competency increases, your confidence level improves,

到时候你会发现你的能力提高了，信心增强了，

学第二外语的时候 - SpeakingMax英语口语达人

plenty good for building strength and muscle mass and also endurance.

对增强力气和练肌肉还有提高耐力都很好。

激情生活 - SpeakingMax英语口语达人