occurrence
noun
əˈkʌrəns
noun
1
something
that
happens
发生的事，事件;
C
frequent/rare/common
occurrence
Laughter
was
a
rare
occurrence
in
his
classroom.
他的课堂上难得有笑声。
Flooding
in
the
area
is
a
common
occurrence.
该地区经常洪水泛滥。
2
the
fact
of
something
happening
发生，出现
singular单数
[+
of
]
The
frequent
occurrence
of
earthquakes
in
the
area
means
that
the
buildings
must
be
specially
designed
to
withstand
the
force.
这一地区频繁发生的地震意味着建筑物必须经过特别设计，以抵抗地震波的冲力。