My father built the company from scratch when he was 19.
There’s no need to start from scratch every time.
The trainees worked very hard to create that service, but they must start to come up with an new idea from scratch.
It will take huge time if we develop the service application from scratch.
from scratch
- scratch は「ゼロから」「最初から」
- 何かをゼロから始める、または前回の進捗や基盤を一切利用せずに新たに始めること
- from を付けることで、よりはっきりと「何もない状態から」を強調する
何もない状態でやらなきゃいけない
start from scratch ですね