词汇	穿梭往来
释义	穿梭往来 shuttle to and fro穿梭
随便看	operational standard operational standard cost operational standardization operational standards operational standby program operational stand-by program operational standby programme Operational Standoff Range operational state operational statement Operational Status Indicator operational status recording subsystem Operational Status Release Operational Status Report operational stock operational stop instruction operational-stop instruction operational storage Operational Storage Site Operational Storage System operational store operational structure Operational Style operational submarine operational subsidy