chlorine
noun
ˈklɔːriːn
noun
1
a
greenish-yellow
gas
with
a
strong
smell
that
is
used
to
keep
the
water
in
swimming
pools
clean.
It
is
a
chemical
ELEMENT:
symbol
Cl
氯，氯气〔一种化学元素，符号为 Cl〕