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EBooks(电子书)
Outcrops
[autkrɔps]
Examples
They
showed
the
surface
outcrops
of
strata
,
and
were
intended
to
be
of
assistance
in
mining
, roadmaking,
canal
construction
, dra ining,
and
water
supply
.
Walter Libby.
An Introduction to the History of Science
.
Inputed by DeWitt