B
plural noun
biː
plural noun
1
the
second
letter
of
the
English
alphabet
英语字母表的第二个字母
C,U
2
the
seventh
note
in
the
musical
SCALE
of
C
MAJOR
or
the
musical
KEY
based
on
this
note
B音〔C 大调音阶中的第七个音〕; B 调
C,U
3
a
mark
given
to
a
student’s
work
to
show
that
it
is
good
but
not
excellent
B级，乙级，乙等〔表示学业成绩良好〕
C
I
got
a
B
in
history.
我历史得了个 B。
4
used
to
refer
in
a
short
way
to
one
of
two
different
things
or
people.
You
can
call
the
first
one
A.
乙，B〔用于称呼两个不同事物或不同的人中的一个，另一个称甲（A）〕
U
the
advantages
and
disadvantages
of
choosing
product
A
or
B
选择产品 A 或 B 的利和弊
5
B4509/B1049 etc
the
name
of
a
road
in
Britain
that
is
smaller
than
an
A-ROAD
B4509/B1049等公路〔英国公路名称，比 A 级公路小〕
6
a
common
type
of
blood
B型〔一种常见血型〕
U