adverb · restricted to a specific action, limit, or possibility

他只能说一点点法语。

adverb · to have no other option but to perform a specific action, usually used when facing difficult circumstances.

面对突然发生的状况，他只能寻求警方的帮助。

adverb · obliged to do something because there is no other alternative

既然公共汽车已经走了，我只能走路回家。