(Brit. informal)have a wretched or uncomfortable time
(英，非正式)过得很不舒服
used to refer to the state of being invisible or non-existent
无影无踪，了无踪影；不存在
she just vanished &B{into thin air}.
她消失得无影无踪。
they seemed to pluck numbers &B{out of thin air}.
他们似乎在凭空拨弄是非。
(informal)used to refer to the police, typically in the context of situations of civil unrest
(非正式)（多指社会动荡环境下的）警察
(informal)balding
(非正式)头发稀疏的