『ハリー・ポッターと賢者の石』本
ウッドがハリーに「下がって」と注意してからボールを取り扱いました。
Stand back.
*stand back：
To remain in or move to a position away from something, especially if it is dangerous.
(thefreedictionary.com)
*stand back：
to move away from something, or to stand at a distance from something, especially something dangerous
(macmillandictionary.com)
「下がって」いろいろ
*back の1つの意味：away from someone or something, especially because they are dangerous
例文：Get back – he’s got a gun!
例文：Everybody stand back while I light the fire.
(macmillandictionary.com)
*stay back：
to not move forwards, or to not move towards something, usually something dangerous or unpleasant
例文：I warned them to stay back.
(macmillandictionary.com)
危険さが意味に含まれてなかったmove back
*backの1つの意味in the direction that is behind you
例文He asked us to move back a few yards.
(macmillandictionary.com)