1. trace amounts
Anglais mot "śladowe ilości"(trace amounts) se produit dans des ensembles:
minerały, skałyUnit 9 dalsza czesc2. traces
Our feud traces back to our childhood.
The thief fled without leaving any traces.
The police didn't find anyone's traces.
We saw the traces of a bear in the snow.
Archeology is a science that studies the activities of human beings and their changes through the study of the traces left by them.
Their traces can still be found.
Anglais mot "śladowe ilości"(traces) se produit dans des ensembles:
Cambridge English for Engineering unit2Kolokwium 1 cz. 1angielski unit1/2Kolokwium 20.11