Chinese Version(中文版)
|
EBooks(电子书)
Clefts
[k'lefts]
Examples
These
are
carved
pieces
of
metal
in
the
lock
which
fit
into
clefts
or
grooves
in
the
key
and
prevent
the
lock
from
being
opened
except
by
its
own
proper
key
.
William Henry Doolittle.
Inventions in the Century
.
Typed by Clint
