在使用音频文件转写的过程，请问返回到的结果中，时间end_time和begin_time是秒还是毫秒？

"detailed_result": [
			        {
			        	"res": [
			                "观众朋友大家好，欢迎收看本期视频哦。"
			            ],
			            "end_time": 6700,
			            "begin_time": 4240,
			            "words_info": [],
			            "sn": "257826606251573543780",
			            "corpus_no": "6758319075297447880"
			        }
			        ...
			    ]