这位学者的研究足迹遍布西北边疆,积累了大量一手资料。Zhè wèi xuézhě de yánjiū zújì biànbù xīběi biānjiāng, jīlěi le dàliàng yìshǒu zīliào.This scholar's research footprint extends across the northwestern frontier, accumulating a large amount of first-hand material.
雪地上的足迹一直延伸到山脚下。Xuědì shàng de zújì yīzhí yánshēn dào shānjiǎo xià.The footprints in the snow extend all the way to the foot of the mountain.
考古学家在山洞里发现了古代人的足迹。Kǎogǔxuéjiā zài shāndòng lǐ fāxiànle gǔdài rén de zújì.Archaeologists discovered ancient human footprints inside the cave.