from scratch
US /frəm skræʧ/
UK /frəm skræʧ/
1.
从零开始, 从头开始
from the very beginning, without any prior preparation or advantage
:
•
We had to build the entire system from scratch.
我们不得不从零开始构建整个系统。
•
She learned to cook from scratch, without using any pre-made ingredients.
她学会了从头开始烹饪，不使用任何预制食材。