be on the track of somebody/somethingLOOK FORto hunt or search for someone or something 追踪[追寻]某人/某物 Police are on the track of the bank robbers. 警方正在追踪银行劫匪。
be on the track of somebody/something• Police are on the track of a gang that has robbed five mini-marts in the last month.• Were they really placed as milestones or could we be on the track of the elusive mark stones of great antiquity?
→ be on the track of somebody/something at track1(8)