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Radioactivity
[,reɪdɪəʊæk'tɪvɪtɪ] or [,redɪoæk'tɪvəti]
例句:
They
concurred
in
the
view
held
by
all
the
most
prominent
workers
in
this
subject
,
namely
,
that
radioactivity
is
an
atomic
phenomenon
.
李贝.
西洋科学史
.
整理:弗娜
