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To remain in or move to a position away from something, especially if it is dangerous.
保持或移动到远离某物的位置，尤指在危险的情况下。
Please stand back from that television—you'll hurt your eyes being so close to it.
请你离那台电视再远点，离它太近会伤到你的眼睛的。
Would you please stand back from the edge?
请你不要站在边上好吗
The policeman asked the spectators to stand back.
警察要旁观者退后。