to signal someone to stop, especially a vehicle
示意某人停下，尤其是交通工具 (shiyi mou ren ting xia, youqi shi jiaotong gongju)
"We finally flagged down a taxi after ten minutes."
"我们终于在十分钟后拦住了一辆出租车。" (wo men zhong yu zai shi fen zhong hou lan zhu le yi liang chu zu che)
something or someone that is difficult to understand
feeling happy or cheerful
To be informed about something regularly.
exactly what is needed or wanted
a person who talks a lot
to monitor or record information consistently
