Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area.

早在20世纪初，一些停车标志是黄色的，因为在光线不好的地方很难看到红色标志。

youdao

This sign appeared in every food area around the airport.

机场的每一个饮食区都有这个标志。

youdao

Successful patterns are derived from many years of successful practice in given areas and are a sign of maturity for that area.

多年以来某些领域的成功实践衍生出了一些成功模式，它们是相关领域的成熟度的标志。

youdao

And while some tout the buildings springing up around the Olympic Park as sign the area's prospects are changing, not everyone is convinced there will be takers.

WSJ: London Developers Hope for Olympic-Size Boom

Starting June 1st, you can log on to letsmove.gov to learn how to find a club in your area and sign up for free.

WHITEHOUSE: Let��s Move! For Military Kids and Families

Councillor Glenn Jordan, Plymouth City Council's Cabinet Member for Leisure, Culture and Sport, said: ''I would like to encourage everyone in the Plymouth area to sign up and take part in our local event.

BBC: Sport Relief is back - and it's coming to a place near you!