词汇	as dry as a bone
释义	as dry as a bone 完全干燥;干极了
随便看	synchronous relationship synchronous relay satellite synchronous relay system synchronous reluctance machine synchronous reluctance motor synchronous reluctance motors synchronous reluctance permanent magnet motor synchronous remote control synchronous rendezvous mechanism synchronous repair approach synchronous repeater synchronous replication synchronous request Synchronous Residual Time Stamp synchronous respirator synchronous response synchronous reversible counter synchronous revolution Synchronous ring synchronous rising and falling synchronous rock arm synchronous rolling synchronous rolling, synchronism synchronous rotary angle synchronous rotary switch