unattended
adj
ˌʌnəˈtendɪəd◄
adj
1
left
alone
without
anyone
in
charge
无人照看的，无人看管的
an
unattended
vehicle
一辆无人看管的汽车
Children
should
not
be
left
unattended
in
the
playground.
不可以把儿童留在游乐场无人照管。