上海城市绿化曾长期处于很低的水平，近20年来得到了长足发展，同时也积累了丰富的经验。

Shanghai city landscaping was once in a very low level for a long period, and has made rapid progress in recent 20 years and accumulated rich experience.

youdao

上海城市绿化曾长期处于很低的水平，近20年来得到了长足发展，同时也积累了丰富的经验。

Shanghai city landscaping was once in a very low level for a long period, and has made rapid progress in recent 20 years and accumulated rich experience.

youdao