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在《PONS词典》中的词汇

track down 动词 trans

to track down sb
to track down sth
to track down sth reference, piece of information

track down 动词

Present
Itrack down
youtrack down
he/she/ittracks down
wetrack down
youtrack down
theytrack down
Past
Itracked down
youtracked down
he/she/ittracked down
wetracked down
youtracked down
theytracked down
Present Perfect
Ihavetracked down
youhavetracked down
he/she/ithastracked down
wehavetracked down
youhavetracked down
theyhavetracked down
Past Perfect
Ihadtracked down
youhadtracked down
he/she/ithadtracked down
wehadtracked down
youhadtracked down
theyhadtracked down