umbrella collector

例句：

1. 1. The umbrella collectors were busy collecting donations for the homeless shelter.
   雨伞收集者正在忙着为无家可归者收容所收集捐赠。
2. 2. The umbrella collector was very helpful in preventing rain from falling on the crowd.
   雨伞收集者在防止雨落在人群上非常有帮助。
3. 3. The umbrella collector had collected over a thousand umbrellas for the event.
   雨伞收集者为这次活动收集了超过一千把雨伞。