In popular areas: - Concentrate use on existing trails and campsites. - Walk single file in the middle of the trail, even when wet or muddy.

在密集使用区-使用现存步道及营地-以一列行走步道，即使湿地或泥泞地。

youdao

The service is popular in urban areas with trendy, young professionals but struggles in smaller cities and rural America.

这项服务在城市地区颇受时尚、年轻的专业人员欢迎，但在较小的城市和美国偏远地区却遭到冷遇。

youdao

Photo manipulation is probably one of the most popular application areas in which Adobe Photoshop is used extensively.

照片处理也许是最受欢迎的一项应用，Adobe Photoshop在其中得到了广泛运用。

youdao

But he points out that the violence in the news is generally not near areas that are popular with foreigners.

VOA: special.2011.06.13

The inspector said motorcyclists should still expect to see marked patrol cars and police bikes in popular areas, and road safety messages would be reinforced at known biker stops.

BBC: North Wales Police say 'safe' motorcyclists are welcome

In less popular areas like Lewisham in southeast London, the average price is just less than 300, 000 pounds.

BBC: Living in: Great cities for public transport

The app "crowd-sources" audio stories about the landmarks in popular tourist areas of major cities.

BBC: Five favourite travel apps of 2011