clue up
动词- To become knowledgeable on a subject. · We've been cluing up all week, so we'll be ready.
- To make knowledgeable on a subject. · That summer course really clued me up on mathematics.
- Synonym of clew.
来自图书馆
“Let go—and clue up!” At this last command all the sails were lowered, and the vessel moved almost imperceptibly onwards.
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