from scratchSTART DOING somethingif you start something from scratch, you begin it without using anything that existed or was prepared before 从零开始,从头开始;白手起家 We had to start again from scratch. 我们只好再次从零开始。
He had built the business up from scratch. 他白手起家创办了这家企业。
from scratch• Doug baked the cake from scratch.• The company was started from scratch in 1995, but its annual sales are already over $20 million.
→ from scratch at scratch2(1)