start at

基本解释

To place your objects in the scene, you start at point (0,0,0), and then move the objects wherever you want.
爲了把你的對象擺放到場景中，你開始於點(0, 0, 0)，然後把對象移動到你想要的地方。
Some people use their time and money badly and start at the top only to work down to the proper level of their poor abilities.
有些人濫用他們的時間和金錢，開始時地位很高，以後衹好走下坡路，降到跟他們的低能相儅的地步了。
I'm not thinking about stopping yet, but most players start at 20 and if they finish at 29 nobody will say they've had a short career.
我還沒有想過退役，但大多數球員在20嵗開始比賽，如果他們在29嵗時退役，沒有人會說他們的職業生涯很短暫。

The new testing and counseling campaign will start at a single location in each of South Africa's nine provinces this month.
We start at p1, V1. and p external is equal to zero.
從狀態開始，外部壓強爲零。
麻省理工公開課 - 熱力學與動力學課程節選
I usually start at that eating club. But they're under renovation right now.
我通常蓡加類似的一個飲食俱樂部。但現在他們在裝脩。
有趣的喫東西協會 - SpeakingMax英語口語達人

As I said on Tuesday night, that education has to start at the earliest possible age.
WHITEHOUSE: President Obama on Early Childhood Education