第80页

信息发布者：
as far as I know
as ... as
one of ...
in the world
（可以）随便（做某事）
人造物体
the
biggest
is
old
much
longer
higher
any
other
oldest
countries
is
long
square
deep
desert
wall
tour
ancient
protect
Asia
amazing
tourists
D
A
D
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