PHRASE
在开始时/ 从一开始
If something happens at the outset of an event, process, or period of time, it happens at the beginning of it. If something happens from the outset it happens from the beginning and continues to happen.
例句
Decide at the outset what kind of learning programme you want to follow...
开始时就选定自己的学习方案。
From the outset he had put his trust in me, the son of his old friend.
他从一开始就很信任我这个他老朋友的儿子。