have two left feet字面意思有两只左脚，引申为笨手笨脚，笨拙。

【例句】
I always feel embarrassed at parties because I have two left feet and can't dance.
我在派对上总是感到尴尬，因为我动作笨拙，不会跳舞。

She always wanted to learn ballet, but she felt discouraged because she believed she had two left feet.
她一直想学芭蕾舞，但她因为觉得自己动作笨拙而感到泄气。