The guards were ordered not to open fire unless someone was in immediate danger.
警卫接到命令，除非有人面临迫在眉睫的危险，否则不得开火。
来源：Expression Original Learning Examples — 口语必备库 — batch40 · Expression Editorial Team段 editorial-base-open-fireOriginal English example and Chinese translation written for Expression; no third-party sentence text is reproduced.
