In 1900, Andre Citroen invented the herringbone gear.

1900年，安德烈·雪铁龙发明了人字形齿轮。

youdao

In 1912, Andre Citroen Citroen began employing shaped gear as a trademark of our products.

1912年，安德列·雪铁龙开始用人字形齿轮作为雪铁龙公司产品的商标。

youdao

For the best examples of this, we have to look to areas like Germany's Duisberg Nord Parc in the Ruhr Valley, or the beautiful green spaces of the Park Andre Citroen in Paris.

BBC: Martha Schwartz