| 单词 | professional contractor |
| 释义 | professional contractor Check out websites and professional contractors. Times, Sunday Times However, while an adopting organization provides the volunteers who do the litter pickup, a sponsoring organization instead pays professional contractors to do the work. Retrieved from Wikipedia CC BY-SA 3.0 Calls to either center are free for all homeowners, excavators and professional contractors who are digging, blasting, trenching, drilling, grading, excavating, or otherwise moving any earth. Retrieved from Wikipedia CC BY-SA 3.0 |
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