operation instruments 啥意思

musical instruments什么意思 operation意思 instruments invalid floating point operation啥意思? operation not supported by backend.啥意思 operation什么意思 in operation什么意思? Operation Overlord什么意思 operation是啥子意思? in operation 意思 given.Operation.bedside.relative.分别是啥意思 二战时,operation overlord意思为霸王计划.这个operation在这里是啥意思?(请英语大仙赐教.)