[xiàn suǒ]
clue; thread; clew
keep track of
掌握线索
lose track of
失去线索
threads of a story
故事的线索
clues for solving a case
破案的线索
follow up a clue; trace a clue
追查线索
No clue to his whereabouts has been found.
至今没有找到有关他行踪的线索。
Can you give me some track to it?
你可以给我提供一些有关那件事的线索吗?