English Version(英文版)
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Specializing
['spɛʃəl,aɪz]
例句:
The
nomad
was
not
simply
an
uncivilized
man
,
he
was
a
man
specialized
and
specializing
along
his
own
line
.
赫伯特·乔治·威尔斯.
世界史纲
.
芭比整理
