There is a whirlpool or dead zone below the main water flow zone when the flow changes and the size of which is related to flow but its location basically unchanged.

当流量在一定范围内变化时，主流区下方均有漩涡低速区或死水区，该区域的大小与流量有关，其位置基本不变。

youdao

You can add the location as well, although it requires the phone to have a working GPS or network connection, so you can't get the information while on a subway or in a dead zone.

你也可以加入地点资讯，但这要求手机开通了GPS或网路连接，因此你在地铁里或无信号区时无法获得这种资讯。

youdao

You can add the location as well, although it requires the phone to have a working GPS or network connection, so you can't get the information while on a subway or in a dead zone.

你也可以加入地点资讯，但这要求手机开通了GPS或网路连接，因此你在地铁里或无信号区时无法获得这种资讯。

youdao