什么呀,一楼那个最佳答案本来就是机器翻译的,语法逻辑都有问题! "上下而求索" is from 《离骚》 (writer:屈原 qu yuan；derivation:《li sao》) The whole sentence is "路曼曼其修远兮,吾将上下而求索". Means:Although the road is endless and faraway,I still want to pursue the truth in the world. In this sentence,"上下" means sky and earth. "求索" means to find and pursue.
