English Version(英文版)
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EBooks(电子书)
Safeguarding
['sef,gɑrd]
例句:
It
is
notorious
that
Edison
did
not
then
enjoy
the
skilful
aid
in
safeguarding
his
ideas
that
he
commanded
later
.
弗兰克·刘易斯·戴尔.
爱迪生的生平和发明
.
贝妮塔整理
