采矿技术的创新不仅仅是效率问题，还关乎安全和可持续性。
Innovation in mining technology isn't just about efficiency—it's about safety and sustainability.
我只知道自己一无所知。
Every immigrant carries an invisible suitcase of memories.
I think there's something about the way I make movies that is a little bit like a play.
一个心理过程的价值在于它的生存效用。