airtight
adj
ˈeətaɪt
adj
1
not
allowing
air
to
get
in
or
out
气密的，密封的
airtight
containers
密封容器
2
planned
or
done
so
carefully
that
there
is
no
chance
of
any
problems
or
mistakes
万无一失的; 无懈可击的
an
airtight
alibi
无懈可击的不在犯罪现场的证据