单词	双弦
释义	双弦double string
随便看	user-generated content user-generated content {=ugc} user graphic file user group user group table user guide user guides user header label user header label，uhl user hold status user-hostile user id user identification user identification and verification user identification code user identification code，uic user identification sequence user identifier user id's user ids u-series disequilibrium dating method user information throughput user innovation user input area user instruction