孩子们 / 穿着 / 齐整 / 的 / 校服 / 排着队 / 走进 / 礼堂 / 参加 / 典礼孩子们穿着齐整的校服,排着队走进礼堂参加典礼。The children, dressed neatly in their school uniforms, walked in a line into the auditorium for the ceremony.